ROCK ISLAND(noun)Did you mean?Synonyms RhymesAlso try..rockislandDefinitions There is 1 meaning of the phrase Rock Island. Rock Island - as a noun A town in northwest illinois on the mississippi river; site of a union prison during the american civil war Word Variations & RelationsAnagramsStarts RStarts ROStarts ROCStarts ROCKEnds DEnds NDEnds ANDEnds LANDStarts R & ends DStarts RO & ends DStarts R & ends NDWords containing ROCKISLANDA-Z Proximitiesroches11rochesterrochet11rochets12rock10 Rock Island rock'n'rollrock-bottomrock-inhabitingrock-lovingrock-ribbed