Meaning

verb take off weight

adjective being of delicate or slender build; - Frank Norris

adjective small in quantity

originBorrowing from Low German or Dutch slim (“bad, sly, clever”), from Middle Dutch slim (“bad, crooked”), from Old Dutch *slimb, from Proto-West Germanic *slimb, from Proto-Germanic *slimbaz (“oblique, crooked”). The sense development would have been "slanting, cunning" (Dutch) > "insignificant, slight" and then "thin, graceful" in English, a shift that Liberman calls an "incredible amelioration" of…

Etymology from Wiktionary, CC BY-SA 3.0