#1 depth n. [deepness] the extent downward or backward or inward; "the depth of the water"; "depth of a shelf"; "depth of a closet". wn
#2 depth n. degree of psychological or intellectual profundity. wn
#3 depth n. (usually plural) the deepest and most remote part; "from the depths of darkest Africa"; "signals received from the depths of space". wn
#4 depth n. (usually plural) a low moral state; "he had sunk to the depths of addiction". wn
#5 depth n. [astuteness, profundity, profoundness, deepness] the intellectual ability to penetrate deeply into ideas. wn
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