Definify.com
Webster 1913 Edition
Nut
Nut
(nŭt)
, Noun.
 [OE. 
nute
, note
, AS. hnutu
; akin to D. noot
, G. nuss
, OHG. nuz
, Icel. hnot
, Sw. nöt
, Dan. nöd
.] 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. 
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
. 3. 
The tumbler of a gunlock. 
Knight.
 4. 
(Naut.) 
A projection on each side of the shank of an anchor, to secure the stock in place. 
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.Nut
,Verb.
 I.
 [
imp. & p. p. 
Nutted
; p. pr. & vb. n. 
Nutting
.] To gather nuts. 
Webster 1828 Edition
Nut
NUT
,Noun.
 1.
 The fruit of certain trees and shrubs, consisting of a hard shell inclosing a kernel.  A nut is properly the pericarp of the fruit.  Various kinds of nuts are distinguished; as walnut, chestnut, hazlenut, butternut.2.
 In mechanics, a small cylinder or other body, with teeth or projections corresponding with the teeth or grooves of a wheel.3.
 The projection near the eye of an anchor.NUT
,Verb.
T.