v. i. [ OE. nodden; cf. OHG. knōtōn, genuotōn, to shake, and E. nudge. ] 1. To bend or incline the upper part, with a quick motion; as, nodding plumes. [ 1913 Webster ]

2. To incline the head with a quick motion; to make a slight bow; to make a motion of assent, of salutation, or of drowsiness, with the head; as, to nod at one. [ 1913 Webster ]

3. To be careless or inattentive; to make a mistake from lack of attention. [ 1913 Webster ]

Nor is it Homer nods, but we that dream. Pope. [ 1913 Webster ]

4. To be drowsy or dull; to doze off, especially while in a sitting position; as, half the class nodded while the professor droned on. [ PJC ]

n. 1. A dropping or bending forward of the upper part or top of anything. [ 1913 Webster ]

Like a drunken sailor on a mast,
Ready with every nod to tumble down. Shak. [ 1913 Webster ]

2. A quick or slight downward or forward motion of the head, in assent, in familiar salutation, in drowsiness, or in giving a signal, or a command; as, a nod of approval. [ 1913 Webster ]

A look or a nod only ought to correct them [ the children ] when they do amiss. Locke. [ 1913 Webster ]

Nations obey my word and wait my nod. Prior. [ 1913 Webster ]

The land of Nod, sleep. [ 1913 Webster ]

v. t. [ imp. & p. p. Nodded p. pr. & vb. n. Nodding. ] 1. To incline or bend, as the head or top; to make a motion of assent, of salutation, or of drowsiness with; as, to nod the head. [ 1913 Webster ]

2. To signify by a nod; as, to nod approbation. [ 1913 Webster ]

3. To cause to bend. [ Poetic ] [ 1913 Webster ]

By every wind that nods the mountain pine. Keats. [ 1913 Webster ]

a. Of the nature of, or relating to, a node; as, a nodal point. [ 1913 Webster ]

Nodal line,
Nodal point, in a vibrating plate or cord, that line or point which remains at rest while the other parts of the body are in a state of vibration. [ 1913 Webster ]

a. [ L. nodatus, p. p. of nodare to make knotty, fr. nodus knot. See Node. ] Knotted. [ 1913 Webster ]

Nodated hyperbola (Geom.), a certain curve of the third order having two branches which cross each other, forming a node. [ 1913 Webster ]

n. [ L. nodatio knottiness. ] Act of making a knot, or state of being knotted. [ R. ] [ 1913 Webster ]

n. One who nods; a drowsy person. [ 1913 Webster ]

a. Curved so that the apex hangs down; having the top bent downward. [ 1913 Webster ]

n. [ OE. nodil, nodle; perh. fr. nod, because the head is the nodding part of the body, or perh. akin to E. knot; cf. Prov. E. nod the nape of the neck. ] 1. The head; also, noodle; -- used jocosely or contemptuously.
Syn. -- noggin. [ 1913 Webster +PJC ]

Come, master, I have a project in my noddle. L'Estrange. [ 1913 Webster ]

2. The back part of the head or neck. [ Obs. ] [ 1913 Webster ]

For occasion . . . turneth a bald noddle, after she hath presented her locks in front, and no hold taken. Bacon. [ 1913 Webster ]

n.; pl. Noddies [ Prob. fr. nod to incline the head, either as in assent, or from drowsiness. ] 1. A simpleton; a fool. L'Estrange.
Syn. -- tomnoddy. [ 1913 Webster ]

2. (Zool.) (a) Any tern of the genus Anous, as Anous stolidus. (b) The arctic fulmar (Fulmarus glacialis). Sometimes also applied to other sea birds. [ 1913 Webster ]

3. An old game at cards. Halliwell. [ 1913 Webster ]

4. A small two-wheeled one-horse vehicle. [ 1913 Webster ]

5. An inverted pendulum consisting of a short vertical flat spring which supports a rod having a bob at the top; -- used for detecting and measuring slight horizontal vibrations of a body to which it is attached. [ 1913 Webster ]