ca·shier’s check (k?-shîrz?)n. A check drawn by a bank on its own funds and signed by the bank’s cashier.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.cashier’s? check` n. a check drawn by a bank on its own funds and signed by its cashier. [1865?70, Amer.] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.