| Word | Definitions | Synonyms |
|---|---|---|
| alderfly | (noun) dark-colored insect having predaceous aquatic larvae | Synonyms: alder fly, Sialis lutaria |
| butterfly | (noun) a swimming stroke in which the arms are thrown forward together out of the water while the feet kick up and down | Synonyms: butterfly stroke |
| (noun) diurnal insect typically having a slender body with knobbed antennae and broad colorful wings | - |