gambrel
Concise Oxford English Dictionary © 2008 Oxford University Press:
gambrel /ˈgambr(ə)l/
▶noun
- 1 a roof having a shallower slope above a steeper one on each side.
- 2 Brit. a hipped roof with a small gable forming the upper part of each end.
– origin C16 (in the sense ‘bent piece of wood or iron’, later ‘joint in a horse's upper hind leg’): from Old North. Fr. gamberel, from gambier ‘forked stick’.
'gambrel' also found in these Oxford entries:

