One that docks something, such as the tail of an animal.(noun)
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 "docker" in a sentence
"No, a docker is better than that; it looks like a roller made of plastic (or melamine or something) with spikes on it so when you roll it across dough it makes all the holes."
"There is no reason why a 'docker' should not grow his own vegetables and be his own dairyman at the same time."
"My learned friend here, I'm sure, will be proud to undertake your defence as a 'docker'; or -- perhaps I should say a"