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porpoise

[pawr-puh s] /ˈpɔr pəs/
noun, plural (especially collectively) porpoise (especially referring to two or more kinds or species) porpoises.
1.
any of several small, gregarious cetaceans of the genus Phocoena, usually blackish above and paler beneath, and having a blunt, rounded snout, especially the common porpoise, P. phocoena, of both the North Atlantic and Pacific.
2.
any of several other small cetaceans, as the common dolphin, Delphinus delphis.
verb (used without object), porpoised, porpoising.
3.
(of a speeding motorboat) to leap clear of the water after striking a wave.
4.
(of a torpedo) to appear above the surface of the water.
5.
to move forward with a rising and falling motion in the manner of a porpoise:
The car has a tendency to porpoise when overloaded.
Origin
1275-1325
1275-1325; Middle English porpoys < Middle French porpois < Vulgar Latin *porcopiscis hog fish, for Latin porcus marīnus sea hog
Related forms
porpoiselike, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for porpoise
  • The paddle adventure meanders through orca, porpoise and whale watching corridors and into quiet coves that teem with wildlife.
  • Another shelf groans with the weight of porpoise skulls.
  • But you have to be pretty smart to hunt a seal or a porpoise.
  • No, it was probably that way on porpoise, since that's the right way for it to keep from turning blue.
  • Writer briefly tells about eating lion, whale, and porpoise.
  • In porpoise fishing, the net is set on a porpoise school for the tuna found beneath them.
British Dictionary definitions for porpoise

porpoise

/ˈpɔːpəs/
noun (pl) -poises, -poise
1.
any of various small cetacean mammals of the genus Phocaena and related genera, having a blunt snout and many teeth: family Delphinidae (or Phocaenidae)
2.
(not in technical use) any of various related cetaceans, esp the dolphin
Word Origin
C14: from French pourpois, from Medieval Latin porcopiscus (from Latin porcus pig + piscis fish), replacing Latin porcus marīnus sea pig
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for porpoise
n.

early 14c., porpas, from Old French porpais (12c.) "porpoise," literally "pork fish," from porc "pork" (see pork (n.)) + peis "fish," from Latin piscis "fish" (see fish (n.)).

The Old French word probably is a loan-translation of a Germanic word meaning literally "sea-hog, mere-swine;" cf. Old Norse mar-svin, Old High German meri-swin, Middle Dutch mereswijn "porpoise" (the last of which also was borrowed directly into French and became Modern French marsouin).

Classical Latin had a similar name, porculus marinus (in Pliny), and the notion behind the name likely is a fancied resemblance of the snout to that of a pig.

Online Etymology Dictionary, © 2010 Douglas Harper
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