Fibreboard rhymes with:
fiberboard, fiberboard, fiberboard, checkerboard, containerboard, fiberboard, fingerboard, linerboard, overboard, paperboard, plasterboard
Fibreboard sounds like:
fiberboard, firebird, freeport, frevert
fiberboard, fiberboard, fiberboard, checkerboard, containerboard, fiberboard, fingerboard, linerboard, overboard, paperboard, plasterboard
fiberboard, firebird, freeport, frevert