Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A small, painful ulcer or sore, usually of the mouth.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun An
ulcer in the mouth, called anaphthous ulcer , caused by a break in the mucous membrane.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an ulceration (especially of the lips or lining of the mouth)
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