8 Wintry Words to Defrost Your Vocabulary
1703, past participle adjective based on Latin serratus (see serrate (adj.)). Serrating "sawing" attested from 1590s, but serrate as a transitive verb not attested before 1750 according to OED.
serrate ser·rate (sěr'āt') or ser·rat·ed (-ā'tĭd)
Having or forming a row of small, sharp, projections resembling the teeth of a saw.
Having a saw-toothed edge or margin notched with toothlike projections.