Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
brace [breɪs] n (on leg) ши́на; (on teeth) пласти́нки pl (tool) коловоро́т; (also: brace bracket) ско́бка#
vt (knees, shoulders) напряга́ть (напря́чь*perf)
braces
npl (BRIT) (for trousers) подтя́жки*pl
to brace o.s. (for shock) соби́раться (собра́ться*perf) с ду́хом
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.