noun, plural tigers, (especially collectively for 1, 2, 5) tiger.
a large, carnivorous, tawny-colored and black-striped feline, Panthera tigris, of Asia, ranging in several races from India and the Malay Peninsula to Siberia: the entire species is endangered, with some races thought to be extinct.
the cougar, jaguar, thylacine, or other animal resembling the tiger.
a person resembling a tiger in fierceness, courage, etc.
an additional cheer (often the word tiger) at the end of a round of cheering.
any of several strong, voracious fishes, as a sand shark.
any of numerous animals with stripes similar to a tiger's.
O.E. tigras (pl.), also in part from O.Fr. tigre (c.1150), both from L. tigris "tiger," from Gk. tigris, possibly from an Iranian source. The meaning "shriek or howl at the end of a cheer" is recorded from 1845, Amer.Eng. Tigress first recorded 1611. Tiger's-eye "yellowish-brown quartz" is recorded from 1891.