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n. pl. tea·cup·fuls
The amount that a teacup can hold.
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.
n., pl. -fuls.
the amount a teacup will hold, equal to 4 fluid ounces (113 grams).
usage: See -ful.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.