Definify.com
Webster 1913 Edition
Lean-to
Lean′-toˊ
,Adj.
(Arch.)
Having only one slope or pitch; – said of a roof.
Lean′-toˊ
,Noun.
1.
(Arch.)
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.