Crossword clues for the word: ROCKISLAND The word ROCKISLAND has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for ROCKISLAND Showing 1 to 7 of 7 results Clue(s) Illinois site of a Civil War prison One of 14D One of the Quad Cities Sailing destination in Narragansett Bay Site of a Union prison during the Civil War Site of the largest government-owned U.S. arsenal Union prison site in NW Illinois