A sliotar or sliothar -LRB- ; may derive from MISC@1 sliabh , meaning `` mountain '' and thar meaning `` across '' -RRB- is a hard solid sphere slightly larger than a tennis ball , consisting of a cork core covered by two pieces of leather stitched together .

A sliotar -LRB- or sliothar -RRB- - is a hard solid sphere slightly larger than a tennis ball , consisting of a cork core covered by two pieces of leather stitched together .
