plural of fish-eating rat

plural of Namaqua rock rat

plural of painted tree rat

plural of Rowett nude rat

plural of Long-Evans rat

plural of Coues' rice rat

plural of desert mole rat

(slang) A class ring bearing the image of a beaver, worn by graduates of MIT.

(slang) A motorcycle maintained at the lowest possible cost and usually painted black.

A motorist who drives through residential streets to avoid traffic congestion on the main roads.