tiger shark

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A large voracious shark (Galeocerdo cuvier) of tropical and warm temperate waters, having a grayish-brown body with dark stripes and spots that are especially prominent in juveniles.

from The Century Dictionary.

• noun A large and voracious shark, Galeocerdo maculatus or Stegostoma tigrinum, more or less marked with yellow, of the warmer parts of the Atlantic and Pacific; the zebra-shark.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A large shark, Galeocerdo cuvier, common in the mid-Pacific, that hunts alone and has dark stripes across its back.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun large dangerous warm-water shark with striped or spotted body