Lean-to
Pronunciation : Lean"-to`
Part of Speech : a.
Definition : Defn: Having only one slope or pitch; -- said of a roof. -- n.
Defn: A shed or slight building placed against the wall of a larger structure and having a single-pitched roof; -- called also penthouse, and to-fall. The outer circuit was covered as a lean-to, all round this inner apartment. De Foe.
(Arch.)
Source : Webster's Unabridged Dictionary, 1913