Along

adv.
  1. By the length; in a line with the length; lengthwise.
  2. In a line, or with a progressive motion; onward; forward.
  3. In company; together.
  4. All along ,
    all through the course of; during the whole time; throughout.
    To get along ,
    to get on; to make progress, as in business.

prep.
  1. By the length of, as distinguished from across.

prep. phr.
  1. (Now heard only in the prep. phrase along of.)
  2. Along of, Along on, often shortened to Long of , prep. phr.,
    owing to; on account of.