saddleback

Concise Oxford English Dictionary © 2008 Oxford University Press:
saddleback/ˈsad(ə)lbak/

▶noun

• 1 Architecture a tower roof which has two opposite gables connected by a pitched section.

• 2 a hill with a ridge along the top that dips in the middle.

• 3 a pig of a black breed with a white stripe across the back.

• 4 a New Zealand wattlebird, mainly black with a reddish-brown back. [Creadion carunculatus.]

– derivatives
saddlebacked adjective.