- (tr, adverb) to distinguish between; discerncan you tell the twins apart?
Idioms and Phrases with tell apart
Discern or distinguish, as in It's hard to tell the twins apart. [First half of 1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.