A large semiaquatic broad-tailed rodent that is native to North America and northern Eurasia. It is noted for its habit of gnawing through tree trunks to fell the trees in order to feed on the bark and build dams.

The Rodentia also includes beavers, muskrats, porcupines, woodchucks, chipmunks, squirrels, prairie dogs, marmots, chinchillas, voles, lemmings, and many others.

intransitive verb

Work hard.

work hard,toil,labour,work one’s fingers to the bone,work like a dog,work like a Trojan,work day and night,exert oneself,keep at it,keep one’s nose to the grindstone,grind,slave,grub,plough,plod,peg