From WordNet (r) 3.0 (2006) [wn]:
bottomless
adj 1: extremely deep; "a bottomless pit"; "a bottomless lake"
2: having no bottom; "bottomless pajamas consisting simply of a
long top opening down the front" [ant: bottomed]
3: having no apparent limits or bounds; "a bottomless supply of
money"; "bottomless pockets"
4: unclothed especially below the waist or featuring such
nudeness; "bottomless dancers"; "a bottomless bar"
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Bottomless \Bot"tom*less\, a.
Without a bottom; hence, fathomless; baseless; as, a
bottomless abyss. "Bottomless speculations." --Burke.
[1913 Webster]