- large feline of forests in most of Asia having a tawny coat with black stripes; endangered
- A very large solitary cat with a yellow-brown coat striped with black, native to the forests of Asia but becoming increasingly rare
- Used to refer to someone fierce, determined, or ambitious
- A dynamic economy of one of the smaller eastern Asian countries, esp. that of Singapore, Taiwan, or South Korea
- a fierce or audacious person; "he's a tiger on the tennis court"; "it aroused the tiger in me"
- Liberation Tigers of Tamil Eelam: a terrorist organization in Sri Lanka that began in 1970 as a student protest over the limited university access for Tamil students; currently seeks to establish an independent Tamil state called Eelam; relies on guerilla strategy including terrorist tactics