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A pit, groove, cavity, or depression, of greater or less depth; as, the temporal fossa on the side of the skull; the nasal fossæ containing the nostrils in most birds.

A die; a half-round set hammer, used for forming grooves and spreading iron; -- called also a creaser.

Any trench, channel, or groove, as in wood or metal; a wrinkle on the face; as, the furrows of age. Farrow weed a weed which grows on plowed land. Shak. -- To draw a straight furrow, to live correctly; not to deviate from the right line of duty. Lowell.

mainspring by having the chain from the barrel which contains the spring wind in a spiral groove on the surface of the cone in such a manner that the diameter of the cone at the point where the chain acts may correspond with the degree of tension of the spring.

neighbors by extortion. Ezek. xxii. 12. Gaining twist, in rifled firearms, a twist of the grooves, which increases regularly from the breech to the muzzle. To gain on or upon. (a) To encroach on; as, the ocean gains on the land. (b) To obtain influence with. (c) To win ground upon; to move faster than, as in a race or…

ions, distance, or capacity; a standard. This plate must be a gauge to file your worm and groove to equal breadth by. Moxon. There is not in our hands any fixed gauge of minds. I. Taylor.

A small tool for boring holes. It has a leading screw, a grooved body, and a cross handle. Gimlet eye, a squint-eye. [Colloq.] Wright.

To make a cut or gnaw a groove around (a tree, etc.) through the bark and alburnum, thus killing it. [U. S.]

hich lays its eggs in the twigs of the hickory, and then girdles each branch by gnawing a groove around it, thus killing it to provide suitable food for the larvæ.

A sunken channel or groove, usually vertical. See Triglyph.

Of or pertaining to the angles of the mouth; as, a gonidial groove of an actinian.

A special groove or furrow at one or both angles of the mouth of many Anthozoa.

The groove of a pulley. Gorge circle (Gearing), the outline of the smallest cross section of a hyperboloid of revolution. -- Gorge hook, two fishhooks, separated by a piece of lead. Knight.

A grooved instrunent used in performing various operations; -- called also blunt gorget. Dunglison.

isel, with a hollow or semicylindrical blade, for scooping or cutting holes, channels, or grooves, in wood, stone, etc.; a similar instrument, with curved edge, for turning wood.

The act of forming a groove or grooves; a groove, or collection of grooves.

The original sense seems to have been a lane cut through trees. See Grave, v., and cf. Groove.] A smaller group of trees than a forest, and without underwood, planted, or growing naturally as if arranged by art; a wood of small extent.

A grooved director for a probe or knife.

A grooved iron rail or tram plate. [Eng.] Gully gut, a glutton. [Obs.] Chapman. -- Gully hole, the opening through which gutters discharge surface water.

Any narrow channel or groove; as, a gutter formed by erosion in the vent of a gun from repeated firing. Gutter member (Arch.), an architectural member made by treating the outside face of the gutter in a decorative fashion, or by crowning it with ornaments, regularly spaced, like a diminutive battlement. -- Gutter pla…