Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun canker_sore

1 sense of canker sore

Sense 1
canker, canker sore -- (an ulceration (especially of the lips or lining of the mouth))
       => ulcer, ulceration -- (a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue)