zoo·keep·er (zo?o?k??p?r)n. One who takes care of animals in a zoo.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.zookeeper (?zu??ki?p?) n1. (Professions) a person who cares for animals in a zoo2. (Zoology) a person who cares for animals in a zooCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014zoo?keep?er (?zu?ki p?r) n. a person who feeds and tends animals in a zoo. [1920?25] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.