Backroom rhymes with:
cloakroom, darkroom, stockroom, workroom, ballroom, barroom, bathroom, bedroom, boardroom, bridegroom, classroom, cloakroom, courtroom, darkroom, elbowroom, headroom, livingroom, lunchroom, mailroom, newsroom, playroom, restroom, schoolroom, stockroom, storeroom, sunroom, toolroom, washroom, workroom
Backroom sounds like:
bacorn, bajarin, bauserman, beckerman, bejarano, bighorn, bigram, bjoern, bjorn, bochram, bookworm, boscarino, bosserman, buckhorn, bugarin, bukharin