Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
From Old French, from Vulgar Latin *acrus or *acrum, change of declension from Classical Latin acer, acrem,from Proto-Italic *akris, from Proto-Indo-European *h₂ḱrós (“sharp”). Compare âcre, a borrowed doublet.
aigre m, f (plural aigres)