I. ˈser-ˌāt, sə-ˈrāt adjective
Etymology: Latin serratus, from serra saw
Date: 1668
: notched or toothed on the edge ; specifically : having marginal teeth pointing forward or toward the apex
a serrate leaf
II. sə-ˈrāt, ˈser-ˌāt transitive verb
( ser·rat·ed ; ser·rat·ing )
Etymology: Late Latin serratus, past participle of serrare to saw, from Latin serra
Date: 1750
: to mark or make with serrations
a serrated knife