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butt-dial

[buht-dahy-uh l, ‐dahyl]Slang.
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verb (used with or without object)
  1. to unintentionally call (someone) on a cell phone in one's back pocket as a result of buttons being pressed accidentally.
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noun
  1. Also butt dial. a call made in this way: Sorry, it must have been a butt-dial.
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Origin of butt-dial

2000–05; butt1 (slang for “buttocks”) + dial
Related formsbutt-dialing, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018