shallow (Noun) — A stretch of shallow water.
shallow (Adjective) — Lacking physical depth; having little spatial extension downward or inward from an outer surface or backward or outward from a centre. ex. "shallow water" ex. "a shallow dish" ex. "a shallow cut" ex. "a shallow closet" ex. "established a shallow beachhead" ex. "hit the ball to shallow left field"
shallow (Adjective) — Not deep or strong; not affecting one deeply. ex. "shallow breathing" ex. "a night of shallow fretful sleep" ex. "in a shallow trance"
shallow (Adjective) — Lacking depth of intellect or knowledge; concerned only with what is obvious. ex. "shallow people" ex. "his arguments seemed shallow and tedious"
shallow (Verb) — Make shallow. ex. "The silt shallowed the canal"
shallow (Verb) — Become shallow. ex. "the lake shallowed over time"