(computing) A kind of computer keyboard consisting of two separate halves, intended to facilitate typing with two hands.

plural of butterfly keyboard

plural of butterfly child

A child who has epidermolysis bullosa.

plural of butterfly door

(automotive) A car door similar to scissor door, but while scissor doors move straight up via hinge points at the bottom of the A-pillar, butterfly doors move up and out via hinges along the A-pillar.

(US) A hamburger made with butter, whether it is mixed with the meat or applied to the bun before toasting.

plural of butterburger

plural of butterbutt

(colloquial) The yellow-rumped warbler (Setophaga coronata), a North American bird species with a conspicuous yellow rump.