Etymology
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serrated (adj.)

1703, past-participle adjective based on Latin serratus (see serrate (adj.)). Serrating "sawing" is attested from 1590s, but serrate as a transitive verb in English is not attested before 1750 (implied in a non-adjectival serrated) according to OED.

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Definitions of serrated

serrated (adj.)
notched like a saw with teeth pointing toward the apex;
Synonyms: serrate / saw-toothed / toothed / notched
From wordnet.princeton.edu