fever blister fever bird • feverbush · · · Info · Definitions · Synonyms · Characters · · fever blister · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) caused by herpes simplex virus type 1 (HSV-1). Synonyms: oral herpes, herpes labialis, cold sore, fever blister. · · Noun Definition 1 Synonyms · · · oral herpes · · Synonym 1 herpes labialis · · Synonym 2 cold sore · · Synonym 3 Characters · · space U+0020 b latin small letter b U+0062 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 v latin small letter v U+0076