English

intertooth

From inter- + tooth.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *h₃ed- ‘to smell’

…

Proto-Germanic *tanþs

Proto-West Germanic *tanþ

Old English tōþ

Middle English toth

English tooth

Today it means

adj Between teeth

Language periods are conventional ranges, not dates for this word.

Etymograph / intertooth