the.com/serrated
why your bread knife doesn't care that it's dull — the teeth do the work
means Having a notched, sawtooth edge — a row of small points and grooves rather than one smooth line.
from From Latin 'serra,' a saw — the same toothy image that names the Sierra mountains, whose jagged ridgeline looked to Spanish eyes like the teeth of a saw against the sky. 'Serratus' meant saw-shaped, and English borrowed it to describe anything edged like a blade with a grudge.
saw logicTiny teeth concentrate force, sawing through what edges can't
shark mouthsMany sharks wield serrated teeth for tearing flesh
stays sharpRecessed edges resist dulling longer than straight blades
leaf edgesBotanists call jagged-margin leaves serrate
latin rootFrom serra, the Latin word for saw