barrel cactus

barrel cactus

noun
any of several large, cylindrical, ribbed, spiny cacti of the genera Echinocactus and Ferocactus.

Origin:
1880–85, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Barrel cactus is always a great word to know.
So is bezoar. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
Encyclopedia Britannica
Encyclopedia

barrel cactus

name for a group of more or less barrel-shaped cacti, family Cactaceae, native to North and South America. It is most often used for two large-stemmed North American genera, Ferocactus and Echinocactus. Small barrel cacti include the genera Sclerocactus, Neolloydia, and Thelocactus, and other barrel cacti are Astrophytum and some species of Thelocactus that were previously placed in Hamatocactus.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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