Crossword clues for A sib 6 letters:EDAMESSinging sib of Vic, Gene, and JoeEUNICEOne of JFK's sibsGRETELHansel's sibFRERESSibs, on the SeineSISTERA sibSIBLuke, to LeiaSIBSKinfolkSIBBro, for oneSIBSSome hand-me-down recipients, casuallySIBSClose kinSIBBro, brieflySIBMember of the famSIBBro, genericallySIBBro, e.g.SIBSFighters in the backseat, oftenSIBAuntie, to momSIBBro or sisSIBBackseat sharer, maybeSIBFamily vacay attendeeSIBSSisters and brothers, brieflySIBRoom sharer, for shortSIBThanksgiving dinner guest, for shortSIBSBedroom sharers, maybeSIBSBig mentors, briefly, as on campusSIBBunk sharerSIBRel.SIBSFamily membersSIBHand-me-down recipient, brieflySIBBro, perhapsSIBSSome of the kinSIBTwin, e.g.SIBOne of the kinSIBSVery close 50-Down, casuallySIBBro, maybeSIBSis, e.g.SIBSee 10 DownSIBTwin, perhapsSIBSBro and broSIBSOffspringsSIBSBrothers and sistersSIBSThey're on the same level of a tree, informallySIBFirst bedroom sharer, for shortSIBRoom sharerSIBKinsmanSIBBrother or sisterSIBObject of a certain rivalry, for shortSIBSHouse mates?SIBLittle sister?SIBSThey may be all under one roofSIBSee 61-Down