Dictionary.com
definitions
  • synonyms

tell time

Keep track of the hours; also, know how to read a clock or watch. For example, This old clock still tells time quite accurately, or He taught his niece to tell time by using a cuckoo clock. This expression uses tell in the sense of “reckon” or “calculate,” a usage dating from about a.d. 1000.

Show More
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.