1. The buttocks, the ass or the anus, based on their location at the bottom of the body torso. The OED coyly defines bottom as: ' the sitting part of a man '. See ass and anus for synonyms.
Quote: In The Penthouse Sexicon (1968) Frederic Mullally defined: -- BOSOM: ' Attractive anatomical protuberance peculiar to the female anatomy.' -- BOTTOM: ' Anatomical protuberance attractive to the peculiar male.'
Quote: Two gay males, Terry and Warren (Anthony Barrile), in Kiss me Guido (1998): -- Terry: 'Me, I'm versatile. I like to be a top or a bottom.' -- Warren: 'Oh, please, Terry. You have bottom stamped on your forehead.'
5. The person occupying the bottom position in sexual activities.