A city on the shore of Lake Erie in Ohio.

(algebraic geometry) An important generalization of the Hirzebruch-Riemann-Roch theorem about complex manifolds.

A medium-sized gamebird in the grouse family, Lagopus muta.

Alternative spelling of rocking chair

One of 102 counties in Illinois, United States. County seat: Rock Island.

The name of a number of islands in various places, as well as a promontory in Ireland. / An island in Trinidad and Tobago. / A former town in Quebec, Canada, now part of Stanstead.

(music, theater) A collection of rock songs which tell a story, often released as a single album.

plural of rock opera

An outcrop of rock that forms a distinctive shape.

Alternative spelling of wall rocket