Defn: A door in the back part of a building; hence, an indirect way.
Atterbury.

BACKDOOR
Back"door", a.

Defn: Acting from behind and in concealment; as backdoor intrigues.

BACKDOWN
Back"down`, n.

Defn: A receding or giving up; a complete surrender. [Colloq.]

BACKED
Backed, a.

Defn: Having a back; fitted with a back; as, a backed electrotype or stereotype plate. Used in composition; as, broad- backed; hump- backed.

BACKER
Back"er, n.

Defn: One who, or that which, backs; especially one who backs a person or thing in a contest.

BACKFALL
Back"fall`, n. Etym: [2nd back ,n. + fall]