[1] : The Collaborative International Dictionary of English v.0.48

nut \nut\ nu^t, n. oe. nute, note, as. hnutu; akin to d.
   noot, g. nuss, ohg. nuz, icel. hnot, sw. n"ot, dan.
   n"od.
   1913 webster
   1. 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

   2. 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

   3. the tumbler of a gunlock. --knight.
      1913 webster

   4. naut. a projection on each side of the shank of an
      anchor, to secure the stock in place.
      1913 webster

   5. 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
see also:
bolt check nut jam nut lock nut nut buoy buoy 
nut coal chestnut coal nut crab ebalia ebalia tuberosa 
nut grass nut grass nut lock nut pine pine 
nut rush scleria nut tree nut weevil balaninus 

[2] : The Collaborative International Dictionary of English v.0.48

nutgrass \nut"grass`\, nut grass \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 + wordnet 1.5
see also:
cyperus rotundus 

[3] : The Collaborative International Dictionary of English v.0.48

nutsedge \nutsedge\, nut sedge \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
see also:
cyperus rotundus nut grass 

[4] : WordNet (r) 2.0

nut grass
     n : a widely distributed perennial sedge having small edible
         nutlike tubers syn: nutgrass, nutsedge, nut sedge,
          cyperus rotundus
see also:
nutgrass nutsedge nut sedge cyperus rotundus 

Brazil Nut >> B Words
Brazil Nut, definition of term: Brazil Nut
brazil+nut_pag1.html

Cashew Nut >> C Words
Cashew Nut, definition of term: Cashew Nut
cashew+nut_pag1.html

Cola Nut >> C Words
Cola Nut, definition of term: Cola Nut
cola+nut_pag1.html

Bear Grass >> B Words
Bear Grass, definition of term: Bear Grass
bear+grass_pag1.html

Blue-Eyed Grass >> B Words
Blue-Eyed Grass, definition of term: Blue-Eyed Grass
blue-eyed+grass_pag1.html

Betel Nut >> B Words
Betel Nut, definition of term: Betel Nut
betel+nut_pag1.html

Blue Grass >> B Words
Blue Grass, definition of term: Blue Grass
blue+grass_pag1.html

Cotton Grass >> C Words
Cotton Grass, definition of term: Cotton Grass
cotton+grass_pag1.html

Bolt And Nut >> B Words
Bolt And Nut, definition of term: Bolt And Nut
bolt+and+nut_pag1.html