GNU Collaborative International Dictionary of English

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Found 3 definitions

1.       
   Nut , n. [OE. nute, note, AS. hnutu; akin to D. noot, G. nuss, OHG. nuz, Icel. hnot, Sw. nöt, Dan. nöd.]
   1913 Webster
   (Bot.) The fruit of certain trees and shrubs (as of the almond, walnut, hickory, beech, filbert, etc.), consisting of a hard and indehiscent shell inclosing a kernel.
   1913 Webster
   A perforated block (usually a small piece of metal), provided with an internal or female screw thread, used on a bolt, or screw, for tightening or holding something, or for transmitting motion. See Illust. of 1st Bolt.
   1913 Webster
   The tumbler of a gunlock.
   Knight.
   
   1913 Webster
   (Naut.) A projection on each side of the shank of an anchor, to secure the stock in place.
   1913 Webster
   pl. Testicles. [vulgar slang]
   PJC
   Check nut, Jam nut, Lock nut, a nut which is screwed up tightly against another nut on the same bolt or screw, in order to prevent accidental unscrewing of the first nut. -- Nut buoy. See under Buoy. -- Nut coal, screened coal of a size smaller than stove coal and larger than pea coal; -- called also chestnut coal. -- Nut crab (Zool.), any leucosoid crab of the genus Ebalia as, Ebalia tuberosa of Europe. -- Nut grass (Bot.), See nut grass in the vocabulary. -- Nut lock, a device, as a metal plate bent up at the corners, to prevent a nut from becoming unscrewed, as by jarring. -- Nut pine. (Bot.) See under Pine. -- Nut rush (Bot.), a genus of cyperaceous plants (Scleria) having a hard bony achene. Several species are found in the United States and many more in tropical regions. -- Nut tree, a tree that bears nuts. -- Nut weevil (Zool.), any species of weevils of the genus Balaninus and other allied genera, which in the larval state live in nuts.
   1913 Webster
   
         
       

2.       
   nutgrass, nut grass , n.(Bot.), A widely distributed perennial plant of the Sedge family (Cyperus rotundus, var. Hydra), which has slender rootstocks bearing small, edible, nutlike tubers, by which the plant multiplies exceedingly, especially in cotton fields.
   Syn. -- nutsedge, nut sedge, Cyperus rotundus.
   1913 Webster
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   WordNet 1.5
         
       

3.       
   nutsedge, nut sedge n. a widely distributed perennial sedge (Cyperus rotundus) having small edible nutlike tubers; also called nut grass.
   Syn. -- nutgrass, nut grass, Cyperus rotundus.
   WordNet 1.5