Noun

1. The lower of two berths

Adjective

1. Less than normal in degree or intensity or amount
2. Literal meanings; being at or having a relatively small elevation or upward extension
3. Used of sounds and voices; low in pitch or frequency

Verb

1. Move something or somebody to a lower position
2. Set lower
3. Make lower or quieter
4. Cause to drop or sink
5. Look angry or sullen, wrinkle one's forehead, as if to signal disapproval