safety arch

English Thesaurus

1. an undecorated arch that is included in order to strengthen or support a construction (noun.artifact)

hypernym	:	arch,
definition	:	(architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it (noun.artifact)

hypernym	:	reinforcement, strengthener,
definition	:	a device designed to provide additional strength (noun.artifact)