brace
noun
2.
3.
a set of two similar things considered as a unit
4.
either of two punctuation marks (‘{’ or ‘}’) used to enclose textual material
5.
a rope on a square-rigged ship that is used to swing a yard about and secure it
7.
an appliance that corrects dental irregularities
8.
a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring