Without a bottom; hence, fathomless; baseless; as, a bottomless abyss.
- Having no bottom.
- Too deep to be measured: a bottomless glacier lake.
- Difficult or impossible to understand; unfathomable: one of the bottomless mysteries of life.
- Having no limitations or bounds; limitless: a bottomless supply of money.
- Nude, especially unclothed below the waist: bottomless dancers.
- Featuring such dancers as entertainment: bottomless bars.