BDB6350
עֲרֻבָּה noun feminine thing exchanged, pledge, token; — suffix עֲרֻבָּתָם 1Sam 17:18 = a token from them, i.e. response, token of welfare, Th Dr and others; absolute as accusative of cognate meaning with verb ׳ עָרַב ע Prov 17:18 give a pledge.