plural of butterfly sleeve

A kind of sleeve that starts at the shoulder and widens along the forearm, not reaching the wrist.

A kind of agave (Agave potatorum).

plural of butterfly crab

A species of shallow-water king crab (Cryptolithodes typicus) native to coastal regions of the northeastern Pacific Ocean

plural of butterfly roof

(architecture) A roof in the shape of a shallow V, with two slopes meeting at a lowest point in the centre.

(finance) A combination of four options, including two calls and two puts, that replicates the payoff of a butterfly.

A hobby concerned with the observation and study of butterflies.

(colloquial, simile) To move effortlessly and in an agile fashion.