Ligne qu'on tire, afin qu'une muraille, qu'une rue, qu'une allée, qu'un chemin, soient dirigés en ligne droite.
ETYM French alignement.
1. The act of adjusting or aligning the parts of a device in relation to each other.
2. The spatial property possessed by an arrangement or position of things in a straight line or in parallel lines.
3. An organization of people (or countries) involved in a pact or treaty