To chew or make a chewing movement.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "chump" in a sentence
"An example: Write the word "chump" in cursive but leave the semicircle of the "p" open so it doesn't touch the p's tail."
"What an argument -- whether a chump is a thug or not."
"I am inclined to think, old boy, that there is a good deal of what they call the chump about me."