Tuning fork(Mus.), a steel instrument consisting of two prongs and a handle, which, being struck, gives a certain fixed tone. It is used for tuning instruments, or for ascertaining the pitch of tunes.

(Tunk) n. A sharp blow; a thump. [Prov. Eng. or Colloq. U. S.]

(Tun"ker) n. (Eccl.) Same as Dunker.

(Tun"nage) n. [From Tun; cf. Tonnage.] See Tonnage.

(Tun"nel) n. . [F. tonnelle a semicircular, wagon-headed vault, a tunnel net, an arbor, OF. also tonnel; dim. of tonne a tun; — so named from its resemblance to a tun in shape. See Ton.]

1. A vessel with a broad mouth at one end, a pipe or tube at the other, for conveying liquor, fluids, etc., into casks, bottles, or other vessels; a funnel.

2. The opening of a chimney for the passage of smoke; a flue; a funnel.

And one great chimney, whose long tunnel thence
The smoke forth threw.

3. An artificial passage or archway for conducting canals or railroads under elevated ground, for the formation of roads under rivers or canals, and the construction of sewers, drains, and the like.

4. (Mining) A level passage driven across the measures, or at right angles to veins which it is desired to reach; — distinguished from the drift, or gangway, which is led along the vein when reached by the tunnel.

Tunnel head(Metal.), the top of a smelting furnace where the materials are put in.Tunnel kiln, a limekiln in which coal is burned, as distinguished from a flame kiln, in which wood or peat is used.Tunnel net, a net with a wide mouth at one end and narrow at the other.Tunnel pit, Tunnel shaft, a pit or shaft sunk from the top of the ground to the level of a tunnel, for drawing up the earth and stones, for ventilation, lighting, and the like.

(Tun"nel), v. t. [imp. & p. p. Tunneled or Tunnelled; p. pr. & vb. n. Tunneling or Tunnelling.]

Tunicate to Turfing

(Tu"ni*cate Tu"ni*ca`ted) a. [L. tunicatus, p. p. of tunicare to clothe with a tunic, fr. tunica a tunic.]

1. (Bot.) Covered with a tunic; covered or coated with layers; as, a tunicated bulb.

2. (Zoöl.) (a) Having a tunic, or mantle; of or pertaining to the Tunicata. (b) Having each joint buried in the preceding funnel- shaped one, as in certain antennæ of insects.

(Tu"ni*cate) n. (Zoöl.) One of the Tunicata.

(Tu"ni*cin) n. (Physiol. Chem.) Animal cellulose; a substance present in the mantle, or tunic, of the Tunicates, which resembles, or is identical with, the cellulose of the vegetable kingdom.

(Tu"ni*cle) n. [L. tunicula a little tunic, coat, or membrane, dim. of tunica a tunic: cf. OF. tunicle.]

1. A slight natural covering; an integument.

The tunicles that make the ball or apple of the eye.

2. (R. C. Ch.) A short, close-fitting vestment worn by bishops under the dalmatic, and by subdeacons.

(Tun"ing) a. & n. from Tune, v.

  By PanEris using Melati.

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