עֲרֻבָּה ʻărubbâh (H6161)

something given as security, i.e. (literally) a token (of safety) or (metaphorically) a bondsman

1) pledge, token, bond, surety, thing exchanged

feminine passive participle of עֲנַמֶּלֶךְ (H6048) in the sense of a bargain or exchange;