Baseball Terms Glossary Free glossaries at translation jobs
Home Free Glossaries Free Dictionaries Post Your Translation Job! Free Articles Jobs for Translators

Baseball Terms Glossary
(Starting with "K")

Become a member of at just $8 per month (paid per year)


Use the search bar to look for terms in all glossaries, dictionaries, articles and other resources simultaneously

This is an alphabetical list of selected unofficial and specialized terms, phrases, and other jargon used in baseball, and their definitions, including illustrative examples for many entries.

0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | Y | Z



The traditional abbreviation for a strikeout. A backwards K is often used to denote a called strikeout. Invented by Henry Chadwick by taking the "most prominent" letter of "struck" and reinforced by inference of "knockout" or "K.O." That connotation still exists, when the announcer says the pitcher "punched out" the batter, a play on words that also refers to "punching" a time clock and the punching motion that the home plate umpire usually makes on a called third strike.

keep off the boards

Also singular, "keep off the board." Keep a team from scoring, and hence off the scoreboard. "Bumgarner has kept runs off the board at a better rate than Carpenter." "After loading the bases with one down in the fourth, the Gators were kept off the board by Barham."

keep the hitter honest

A pitcher needs to mix up his pitches and thereby "keep the hitter honest" by making it difficult for the hitter to anticipate the type, speed, and location of the next pitch. Sometimes this means throwing a brushback pitch to keep the batter from leaning over the plate to reach a pitch on the outer part of the plate. "Partially with Boston in mind, Wang focused this spring on expanding his repertoire to keep hitters honest and move them off the plate."

keep the line moving

A reference to a series of batters getting on base safely and advancing runners on base, alluding to an assembly line. "Beltran's popout tore apart a rally that had shaken the Hall of Fame-bound Rivera, molding a game out of what moments before had been a five-run rout. Instead, Beltran couldn't keep the line moving, leaving an eager David Wright awaiting on deck."

keystone sack

Second base. Like the keystone of an arch, second base is the key to both scoring (a runner on the base is in scoring position) and defense (with strength up the middle).
Together the shortstop and second baseman – the two players who play nearest to second base, often combining on double plays – are sometimes referred to as the keystone combination.


A player who makes an error fielding a ground ball may be said to have "kicked the ball" or "kicked it."


  • A batter who hits the ball very far may be said to have "killed the ball."
  • A pitcher who stifles a rally by the opposing team may be said to have "killed the rally."


The inside half of the strike zone. "That pitch was all up in his kitchen".


  • Knock in: To score an RBI. "Kenny Lofton knocked in the go-ahead run with a 10th-inning single Thursday afternoon as the Cleveland Indians beat Detroit, 3-1."
  • A Hit: as in "a two-base knock".
  • Knocks: Hard hits or extra base hits, not necessarily producing RBIs or referring to a specific type of hit. "Curtis had some solid knocks today".
  • Knocked around: A pitcher who gives up a lot of hits and gets removed from the game is said to have been knocked around or knocked out of the box or knocked out of the game.
  • Knock down: an infielder who stops a line drive from getting through the infield "knocks it down," perhaps then picking up the ball and throwing the runner out.
  • Knock off: to knock off an opponent is to win the game. "Hawai'i knocks off Santa Clara."
  • Knock the cover off the ball: to hit a baseball extremely hard. See also tore the cover off the ball.


A pitch thrown with no spin, traditionally thrown with the knuckles, but also with the fingertips. It tends to flutter and move suddenly on its way to the plate. Also refers to a batted ball that flutters "like a knuckleball." SYNONYMS: knuckler, flutterball, butterfly ball, floater, bug.

0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | Y | Z

See all sports glossaries:

Published - February 2011

Find free glossaries at

Find free dictionaries at

Subscribe to free newsletter

Need more translation jobs from translation agencies? Click here!

Translation agencies are welcome to register here - Free!

Freelance translators are welcome to register here - Free!

Submit your glossary or dictionary for publishing at


Please see some ads as well as other content from

Free Newsletter

Subscribe to our free newsletter to receive news from us:

Use More Glossaries
Use Free Dictionaries
Use Free Translators
Submit Your Glossary
Read Translation Articles
Register Translation Agency
Submit Your Resume
Obtain Translation Jobs
Subscribe to Free Newsletter
Buy Database of Translators
Obtain Blacklisted Agencies
Vote in Polls for Translators
Read News for Translators
Advertise Here
Read our FAQ
Read Testimonials
Use Site Map
translation directory

christianity portal
translation jobs


Copyright © 2003-2019 by
Legal Disclaimer
Site Map