Definition of: guide

(gīd) v. guid·ed, guid·ing v.t.
1. To show the way to; lead or accompany as a guide.
2. To direct the motion or action of, as a vehicle, tool, etc.
3. To lead or direct the affairs, standards, opinions, etc., of: Let these principles guide your life.
—v.i.
4. To act as a guide. See synonyms under LEAD¹, REGULATE.
—noun
1. One who leads or directs another in any path or direction; one who shows the way by accompanying or going in advance; specifically, one who conducts sightseers, or an expert woodsman who conducts hunters, fishermen, etc.
2. Something serving to guide; a guidebook or guidepost.
3. Mech. Any device acting as an indicator or serving to keep a part or object in position or to regulate its operation.
4. Mil. A soldier on the flank of a line to mark a pivot or regulate an alinement. See synonyms under RULE. [<OF guider]
—guid′a·ble adjective
—guid′er noun