| Butterfly (n.) A general name for the numerous species of diurnal Lepidoptera. |
| Sea butterfly () A pteropod. |
| butterfly / butterfly stroke a swimming stroke in which the arms are thrown forward together out of the water while the feet kick up and down |
| butterfly ray a stingray with a short tail and a broad fin |
| butterfly diurnal insect typically having a slender body with knobbed antennae and broad colorful wings |
| nymphalid / nymphalid butterfly / brush-footed butterfly / four-footed butterfly medium to large butterflies found worldwide typically having brightly colored wings and mucheduced nonfunctional forelegs carried folded on the breast |
| mourning cloak / mourning cloak butterfly / Camberwell beauty / Nymphalis antiopa of temperate regions, having dark purple wings with yellow borders |
| tortoiseshell tortoiseshell butterfly brilliantly colored, larvae feed on nettles |
| ringlet / ringlet butterfly any of various butterflies belonging to the family Satyridae |
| comma / comma butterfly / Polygonia comma anglewing butterfly with a comma-shaped mark on the underside of each hind wing |
| emperor butterfly / emperor large richly colored butterfly |
| peacock peacock butterfly / Inachis io European butterfly having reddish-brown wings each marked with a purple eyespot |