(slang) Someone who works or studies seemingly way too much.

(forestry) A forest that has attained great age without significant disturbance.

(transitive, informal) To add (fat, muscle, etc.) so as to increase mass or bulk.

(idiomatic) To avoid something.

(intransitive) To dine at a restaurant or such public place. / (transitive) To erode or encroach upon by gradually consuming. / (transitive, slang, vulgar) To perform cunnilingus or anilingus on.

(astronomy) A small Solar System body (ie. asteroid, comet, or large meteoroid) whose orbit brings it into proximity with Earth's orbit.

(transitive) To terminate; to call the end of. / (transitive, marketing) Synonym of close (“to make a sale”) / (surfing) Of a wave, to break all at once, instead of progressively along its length.

(idiomatic) To figure out; to realize the truth.

(idiomatic) Widely scattered or distributed; numerous and differing greatly. / (idiomatic) In widely scattered directions; in a widely varying manner.

(informal, idiomatic) To be very frightened, scared, or nervous.