But"tress (&?;), n. [OE. butrasse,
boterace, fr. F. bouter to push; cf. OF. bouteret
(nom. sing. and acc. pl. bouterez) buttress. See Butt an end,
and cf. Butteris.] 1. (Arch.) A
projecting mass of masonry, used for resisting the thrust of an arch, or
for ornament and symmetry.
&fist; When an external projection is used merely to stiffen a wall, it
is a pier.
2. Anything which supports or strengthens.
"The ground pillar and buttress of the good old cause of
Flying buttress. See Flying
But"tress (&?;), v. t. [imp. & p.
p. Buttressed (&?;); p. pr. & vb. n.
Buttressing.] To support with a buttress; to prop; to brace
To set it upright again, and to prop and buttress it
up for duration.