Meaning

noun the trace of a point whose direction of motion changes

noun a line on a graph representing data

noun a pitch of a baseball that is thrown with spin so that its path curves as it approaches the batter

originAttested since the 1690s, from Latin curvus (“bent, curved”), ultimately from Proto-Indo-European *(s)ker- (“to bend, curve, turn”) + *-wós. Doublet of curb, shrink, carcer, and cancer.

Etymology from Wiktionary, CC BY-SA 3.0