(astronomy) A bluish-white star in the constellation Canis Major; Alpha (α) Canis Majoris A. A vertex of the Winter Triangle and the brightest star in the night sky. It is actually a binary star with a white dwarf companion star.

Alternative spelling of dogfight

(colloquial, dated) A womanizer.

A peg placed in a hole in a workbench to clamp a workpiece in place

plural of dog year

(informal) A period of time in the life of dogs, defined such that the average life expectancy of a dog in "dog years" is numerically equivalent to the average life expectancy of a human. A 4- and a 5-year-old dog are about as mature as a human of 28 to 30 years and 33 to 35 years, respectively. The most common calcuation uses a ratio of seven dog years to one human year.

A high-pitched whistle, inaudible to humans, used to train dogs. / (figuratively) That which is understood only by a narrow demographic.

A collar for a dog. / (informal) A clerical collar. / A close-fitting woman's necklace.

(idiomatic) A miserable, wretched existence. / (idiomatic) A life of indolence where the individual may do as he or she pleases, just like a pampered dog.

a person who looks after sled dogs