HR
Hour
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Last Updated: August 15, 2014
Home run
HR is a quick way to say "home run." It refers to when a baseball player hits the ball over the fence and rounds the bases back to home base.
A player may also hit an inside-the-park home run by running all the bases to home on his hit without any errors. HR commonly shows up on stat sheets.
Example
Mike Trout hitting one of many HRs
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Last Updated: February 23, 2017
Human resources
An acronym used in business chat and slang, referring to the human resources department.
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Last Updated: November 10, 2014
Homeroom
A simple way to refer to homeroom, a school session where a teacher makes announcements and takes attendance; also called Registration or Connect Time.
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Last Updated: August 15, 2014
An abbreviation for the measurement of time equal to 60 minutes; often used to describe when something starts or the time that you'll arrive some place; can also be seen as "hrs" when used plurally.