to arrange in a straight line; adjust according to a line.
to bring into a line or alignment.
to bring into cooperation or agreement with a particular group, party, cause, etc.: He aligned himself with the liberals.
to adjust (two or more components of an electronic circuit) to improve the response over a frequency band, as to align the tuned circuits of a radio receiver for proper tracking throughout its frequency range, or a television receiver for appropriate wide-band responses.