guaiac Guahivo • guaiacol · · · Info · Definitions · Synonyms · Characters · · guaiac · · Text Latin · · Script 6 · · Length 3 · · Syllables Definitions · · · (noun) hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum. Synonyms: lignum vitae, guaiacum. · · Noun Definition 1 Synonyms · · · lignum vitae · · Synonym 1 guaiacum · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 g latin small letter g U+0067 i latin small letter i U+0069 u latin small letter u U+0075