1611, from chub (q.v.) the short, thick fish used as bait, used metaphorically for "lazy person" since 1558; perhaps influenced by O.N. kumba "log," kumben "stumpy."
n. an erection. (Usually objectionable.) : He always gets a chubby when he doesn't need it and never when he does.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Example sentences
Lots of dolls, especially one that cackled hysterically and kicked up her legs when you waved a hand near her chubby cheeks.
He had chubby cheeks and a jack-o'-lantern's triangular nose.
Groundhogs are chubby mammals with flattened heads, stubby legs and short, bushy tails.
Short and chubby, she always thought she was quite the beauty.
They are distinctive with their long fins and chubby head.
Half a dozen chubby sheep graze dreamily on the meadow.