definitions

apple a day

A small preventive treatment wards off serious problems, as in He exercises regularly—an apple a day is his motto. This idiom shortens the proverb An apple a day keeps the doctor away, first cited about 1630.

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Nearby words

applanometry, applaud, applaudable, applause, apple, apple a day, apple bee, apple blight, apple blossom, apple box, apple brandy
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.