"cutting tool," O.E.
sagu, from P.Gmc.
*sago "a cutting tool" (cf. O.E.
seax "knife," O.N.
sõg, Norw.
sag, Dan.
sav, M.Du.
saghe, Du.
zaag, O.H.G.
saga, Ger.
Säge "saw"), from PIE base
*sak-/*sek- "to cut" (cf. L.
secare "to cut," Rus.
sech' "to cut;" see
section). The verb is attested from c.1225; strong conjugation began 15c. on model of
draw, etc.
Sawbones "surgeon" is 1837 slang;
sawdust is 1530;
sawhorse recorded from 1778;
sawfish first attested 1664. The personal name
Sawyer is attested from c.1248 (cf.
lawyer).
Sawed-off "short, cut short" is attested 1887 of persons, 1898 of shotguns.