| Word | Definitions | Synonyms |
|---|---|---|
| dayfly | (noun) slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days | Synonyms: mayfly, shadfly |
| mayfly | (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 |