Pubes that are exposed while clothes are on.
When I saw Betsy in her bikini, there was a peek-a-bush staring back.
by Thesexythreeandablackdude November 26, 2010
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Any amount of pubic hair that is visible around clothing, or in a situation that others seeing your pubic hair is unacceptable or undesirable.
"Did you see Marie's peek-a-bush at the lake today?"

"Yeah. It was a little disturbing, but I kind of liked it."

"Oh, fuck yeah."
by JB in the Tree July 29, 2013
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When pubic hair becomes exposed by stretching the arms above one's head, causing the shirt to rise above the pubic region.
"I saw Emma's peek-a-bush the other day."

"How did you see it?"

"She stretched and her shirt lifted up and it just poked out!"
by tbshockwave September 19, 2013
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