Webster's Revised Unabridged Dictionary · 1913

Toothache

Toothache , noun

(Medicine) Pain in a tooth or in the teeth; odontalgia.
Collocations (2)
Toothache grass (Botany) , a kind of grass (Ctenium Americanum) having a very pungent taste.
Toothache tree (Botany) , (a) The prickly ash. (b) A shrub of the genus Aralia (Aralia spinosa).