mayfly Mayflower • Mayfowl · · · Info · Definitions · Synonyms · Characters · · mayfly · · Text Latin · · Script 6 · · Length 2 · · Syllables Definitions · · · (noun) slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days. Synonyms: dayfly, shadfly. · · Noun Definition 1 Synonyms · · · dayfly · · Synonym 1 shadfly · · Synonym 2 Characters · · a latin small letter a U+0061 f latin small letter f U+0066 l latin small letter l U+006C m latin small letter m U+006D y latin small letter y U+0079