oc·to·pus

[ok-tuh-puhs]
noun, plural oc·to·pus·es, oc·to·pi [-pahy] .
1.
any octopod of the genus Octopus, having a soft, oval body and eight sucker-bearing arms, living mostly at the bottom of the sea.
2.
something likened to an octopus, as an organization with many forms of far-reaching influence or control.

Origin:
1750–60; < Neo-Latin < Greek oktṓpous (plural oktṓpodes) eight-footed; see octo-, -pod

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World English Dictionary
octopus (ˈɒktəpəs) [Click for IPA pronunciation guide]
 
n , pl -puses
1.  any cephalopod mollusc of the genera Octopus, Eledone, etc, having a soft oval body with eight long suckered tentacles and occurring at the sea bottom: order Octopoda (octopods)
2.  a powerful influential organization with far-reaching effects, esp harmful ones
3.  another name for spider
 
[C18: via New Latin from Greek oktōpous having eight feet]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Octopus is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a stew of meat, vegetables, potatoes, etc.
Etymonline
Word Origin & History

octopus
1758, genus name of a type of eight-armed cephalopod mollusks, from Gk. oktopous "eight-footed," from okto "eight" (see eight) + pous "foot." Proper plural is octopodes, though octopuses probably works better in English. Octopi is from mistaken assumption that -us is the L.
noun ending that takes -i in plural.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
It might want you to think otherwise, but this rare sea creature is actually an
  octopus.
The technology for doing this is demonstrated daily by members of the octopus
  and cuttlefish families.
And a mimicking octopus not only changes colors but can emulate anything from
  rocks to snakes.
The octopus takes a couple of hours to cook, but the process is fun to watch,
  and the results are splendid.
Image for octopus
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