Nouns

(n)lower berth, lowerthe lower of two berths

Verbs

(v)lower1, take down, let down, get down, bring downmove something or somebody to a lower position“take down the vase from the shelf”
(v)lower1, lourset lower“lower a rating”, “lower expectations”
(v)turn down, lower1, lourmake lower or quieter“turn down the volume of a radio”
(v)lower1, depresscause to drop or sink“The lack of rain had depressed the water level in the reservoir”
(v)frown, glower, lour, lower2look angry or sullen, wrinkle one's forehead, as if to signal disapproval

Adjectives

(a)lowerthe bottom one of two