A woman performing a chin-up or pull-up exercise.
pull-up definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
an exercise in which a person chins himself or herself
pull-up definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
pull-up - Phrases/Idioms
Stop or cause to stop, as in He pulled up his horse, or They pulled up in front of the door. [Early 1600s]
Catch up, advance in relation to others, as in a race. For example, She was behind at the start, but she quickly pulled up. [Late 1800s] Also see pull oneself up by one's bootstraps.