1 definition by GCHS

/Graw-toh/ "grot-to" , "grot-to-ing" , "grot-toed" , "grot-to-er" , "grot-to-ment"
(n.) A sacred place in the midst of the Guerin Catholic's forest that was commonly attended for prayer and reflection before athletic events, but was later depreciated by a couple of horny frosh that couldn't wait 'til they got home.

(v.) The act of attending Guerin Catholic's grotto to give or receive any kind of sexual pleasure with a significant other who also seeks sexual pleasure.
1. "Do you even Grotto, bro?"
2. "Would you wanna maybe hit up the Grotto tomorrow after school?"
3. "I promise, I was only doing homework with her at the Grotto."
by GCHS September 15, 2014
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