Alternative form of buttonhole

plural of button hole

Alternative form of buttonhole

plural of buttonhole stitch

plural of butter mountain

(Australia) A day on which money is raised for a group or cause by selling buttons for people to wear.

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.

(computing, video games) Having a high refresh rate so that the subjective experience does not include flickers or pauses as the video changes frames.

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