The word jerkin can mean:-

• A garment: see Jerkin (garment).
• Falconer's term for a male gyrfalcon.
• In architecture the term jerkin-roofed is applied, probably with some obscure connection with the garment, to a particular form of gable end, the gable being cut off half way up the roof and sloping back like a "hipped roof" to the edge.

Falconry