Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
strap [stræp] n реме́нь*m (of slip, dress) брете́лька#; (of watch, on shoes) ремешо́к#
vt (also: strap on) пристёгивать (пристегну́ть perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.