1moving in a constant direction on (a more or less horizontal surface): [as preposition]:soon we were driving along a narrow roadhe saw Gray run along the top of the wall [as adverb]:we continued to plod along
used to refer to the passage of time or the making of progress: [as preposition]:you’ll pick up some valuable tips along the way [as adverb]:they asked how the construction was coming along
2 [preposition] extending in a more or less horizontal line on:cars were parked along the grass vergethe path along the cliff
3 [adverb] in or into company with others:he had brought along a friend of his
along with
in company with or at the same time as:I was chosen, along with twelve other artists