boring head

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• boring head — noun : the cutting end of a boring tool: as a. : the cutterhead of a diamond drill b. : the cutter holder on a boring rod …   Useful english dictionary

• boring machine — Metalworking. a machine for boring holes in which the cutter is rotated, usually about a horizontal axis. * * * Machine tool for producing smooth and accurate holes in a workpiece by enlarging existing holes with a cutting tool, which may bear a… …   Universalium

• Boring (mechanical) — In machining, boring is the process of enlarging a hole that has already been drilled (or cast), by means of a single point cutting tool (or of a boring head containing several such tools), for example as in boring a cannon barrel. Boring is used …   Wikipedia

• Boring — Bor ing, n. 1. The act or process of one who, or that which, bores; as, the boring of cannon; the boring of piles and ship timbers by certain marine mollusks. [1913 Webster] One of the most important applications of boring is in the formation of… …   The Collaborative International Dictionary of English

• Boring bar — Boring Bor ing, n. 1. The act or process of one who, or that which, bores; as, the boring of cannon; the boring of piles and ship timbers by certain marine mollusks. [1913 Webster] One of the most important applications of boring is in the… …   The Collaborative International Dictionary of English

• Boring tool — Boring Bor ing, n. 1. The act or process of one who, or that which, bores; as, the boring of cannon; the boring of piles and ship timbers by certain marine mollusks. [1913 Webster] One of the most important applications of boring is in the… …   The Collaborative International Dictionary of English

• head for the hills — {v. phr.}, {informal} To get far away in a hurry; run away and hide. Often used imperatively. * /Head for the hills. The bandits are coming./ * /He saw the crowd chasing him, so he headed for the hills./ * /When they saw the mean boy coming, they …   Dictionary of American idioms

• head for the hills — {v. phr.}, {informal} To get far away in a hurry; run away and hide. Often used imperatively. * /Head for the hills. The bandits are coming./ * /He saw the crowd chasing him, so he headed for the hills./ * /When they saw the mean boy coming, they …   Dictionary of American idioms

• head — head1 [ hed ] noun *** ▸ 1 top part of body ▸ 2 your mind and thoughts ▸ 3 leader of group ▸ 4 top/front part of something ▸ 5 white bubbles on beer ▸ 6 where river begins ▸ 7 top of drum ▸ 8 center of spot on skin ▸ 9 for counting animals ▸ 10… …   Usage of the words and phrases in modern English

• head — /hɛd / (say hed) noun 1. the upper part of the human body, joined to the trunk by the neck. 2. the corresponding part of an animal s body. 3. the head considered as the seat of thought, memory, understanding, etc.: to have a head for mathematics …  

• Head stock — Stock Stock (st[o^]k), n. [AS. stocc a stock, trunk, stick; akin to D. stok, G. stock, OHG. stoc, Icel. stokkr, Sw. stock, Dan. stok, and AS. stycce a piece; cf. Skr. tuj to urge, thrust. Cf. {Stokker}, {Stucco}, and {Tuck} a rapier.] 1. The stem …   The Collaborative International Dictionary of English