Alignment

The act of adjusting to a line; arrangement in a line or lines; the state of being so adjusted; a formation in a straight line; also, the line of adjustment; esp., an imaginary line to regulate the formation of troops or of a squadron.

The ground-plan of a railway or other road, in distinction from the grades or profile.

the act of adjusting or aligning the parts of a device in relation to each other

(astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac