n A flying insect of the order Lepidoptera, distinguished from moths by their diurnal activity and generally brighter colouring. (defdate|from 11th c.)
n (context|now|_|rare) Someone seen as being unserious and (originally) dressed gaudily; someone flighty and unreliable. (defdate|from 17th c.)
v To cut almost entirely in half and spread the halves apart, in a shape suggesting the wings of a butterfly.
v To cut strips of surgical tape or plasters into thin strips, and place across a gaping wound to close it.