(1):

(n.) An invisible power in a body by which it draws anything to itself; the power in nature acting mutually between bodies or ultimate particles, tending to draw them together, or to produce their cohesion or combination, and conversely resisting separation.

(2):

(n.) The act or property of attracting; the effect of the power or operation of attraction.

(3):

(n.) The power or act of alluring, drawing to, inviting, or engaging; an attractive quality; as, the attraction of beauty or eloquence.

(4):

(n.) That which attracts; an attractive object or feature.