Guide bar(Mach.), the part of a steam engine on which the crosshead slides, and by which the motion of the piston rod is kept parallel to the cylinder, being a substitute for the parallel motion; — called also guide, and slide bar.Guide block(Steam Engine), a block attached in to the crosshead to work in contact with the guide bar.Guide meridian. (Surveying) See under Meridian.Guide pile (Engin.), a pile driven to mark a place, as a point to work to.Guide pulley(Mach.), a pulley for directing or changing the line of motion of belt; an idler. Knight.Guide rail(Railroads), an additional rail, between the others, gripped by horizontal driving wheels on the locomotive, as a means of propulsion on steep gradients.

(Guide"board`) n. A board, as upon a guidepost having upon it directions or information as to the road. Lowell.

(Guide"book`) n. A book of directions and information for travelers, tourists, etc.

(Guide"less), a. Without a guide. Dryden.

(Guide"post`) n. A post at the fork of a road, with a guideboard on it, to direct travelers.

(Guid"er) n. A guide; a director. Shak.

(Guid"er*ess) n. A female guide. [Obs.] Chaucer.

(Guid"guid`) n. (Zoöl.) A South American ant bird of the genus Hylactes; — called also barking bird.

(Gui"don) n. [F. guidon, It. guidone. See Guide, v. t.]

2. To regulate and manage; to direct; to order; to superintend the training or education of; to instruct and influence intellectually or morally; to train.

He will guide his affairs with discretion.
Ps. cxii. 5.

The meek will he guide in judgment.
Ps. xxv. 9.

(Guide), n. [OE. giae, F. guide, It. guida. See Guide, v. t.]

1. A person who leads or directs another in his way or course, as in a strange land; one who exhibits points of interest to strangers; a conductor; also, that which guides; a guidebook.

2. One who, or that which, directs another in his conduct or course of life; a director; a regulator.

He will be our guide, even unto death.
Ps. xlviii. 14.

3. Any contrivance, especially one having a directing edge, surface, or channel, for giving direction to the motion of anything, as water, an instrument, or part of a machine, or for directing the hand or eye, as of an operator; as: (a) (Water Wheels) A blade or channel for directing the flow of water to the wheel buckets. (b) (Surgery) A grooved director for a probe or knife. (c) (Printing) A strip or device to direct the compositor's eye to the line of copy he is setting.

4. (Mil.) A noncommissioned officer or soldier placed on the directing flank of each subdivision of a column of troops, or at the end of a line, to mark the pivots, formations, marches, and alignments in tactics. Farrow.

  By PanEris using Melati.

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