Top Definition
The feeling of itchyness that occurs from having facial hair grow back a little while after you shave. It usually only lasts for a short while, until the hair grows more fully or the person shaves again. When the person shaves again, however, cactus chin is sure to come back temporarily.
I am constantly scratching my beard region whenever I get cactus chin.
by Myagooshki February 20, 2011

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