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b-day

or b'day

[bee-dey] /ˈbiˌdeɪ/
noun, Informal.
1.
birthday:
When's her b-day?
Origin of b-day
by shortening
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Contemporary definitions for b-day
noun

birthday

Examples

presents for my b-day

Word Origin

shortening

Usage Note

slang

Dictionary.com's 21st Century Lexicon
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