Definify.com
Webster 1913 Edition
Saddleback
Sad′dle-backˊ
,Noun.
1.
Anything saddle-backed; esp., a hill or ridge having a concave outline at the top.
2.
(Zool.)
(a)
The harp seal.
(b)
The great blackbacked gull (
Larus marinus
). (c)
The larva of a bombycid moth (
Empretia stimulea
) which has a large, bright green, saddle-shaped patch of color on the back.