What is "arc-boutant"

arc-boutant \arc`-bou`tant"\ ([aum]r`b[ooma]`t[aum]N), n. [F.] (Arch.) A buttress that stands apart from the main structure and connected to it by an arch; same as flying buttress.
--Gwilt.

Syn: flying buttress

n. (context architecture English) Alternative for a flying buttress

1. n. a buttress that stands apart from the main structure and connected to it by an arch [syn: flying buttress]

2. [also: arcs-boutants (pl)]