Crevasse

[Becky]

A deep Crevice or fissure, as in embankment; one of the
clefts or fissure by which the mass of a glacier is divided.

[Julian]

The [female] [reproductive organ]

[Michiko]

the crack or space in the [boobal area]. formed by a particularly good bra, it often made [evident] when wearing a [low cut] shirt. Is usually a receptical for dropped objects(usually food)

[Kit]

Usually [applicable] to small cheap hotels with double beds, one of which is very close to a side wall.
You yell crevasse and push an unexpected friend into [the gap] between the bed and the wall and then all of you [pile on] that kid and watch him suffer.

[Tina]

[The act] of [crevassing]

[Greta]

A deep open crack, especially one in a glacier.

[Raeanne Dimick]

Crevasse in Mountaineering. A crack or cleft in the surface of a glacier.

[Mary Mallozziberg]

a very deep crack in the thick ice of a glacier (= moving mass of ice)