ADJECTIVE (4)

1. extremely deep;
- Example: "a bottomless pit"
- Example: "a bottomless lake"

2. having no bottom;
- Example: "bottomless pajamas consisting simply of a long top opening down the front"

3. having no apparent limits or bounds;
- Example: "a bottomless supply of money"
- Example: "bottomless pockets"

4. unclothed especially below the waist or featuring such nudeness;
- Example: "bottomless dancers"
- Example: "a bottomless bar"

The Collaborative International Dictionary of English v.0.48:

Bottomless \Bot"tom*less\, a.
   Without a bottom; hence, fathomless; baseless; as, a
   bottomless abyss. "Bottomless speculations." --Burke.
   [1913 Webster]

WordNet (r) 3.0 (2006):

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"