ETYM Old Eng. along, anlong, AS. andlang, along.
1. In accompaniment or as a companion.
2. In addition (usually followed by 'with').
3. In line with a length or direction (often followed by 'by' or 'beside').
4. To a more advanced state.
5. With a forward motion; SYN. on.
alongside / əlɒŋsaɪd /
1. Along the side of, beside
2. In company with
3. In addition to
1. A soft mass, especially of some loose, fibrous substance, used for various purposes.
2. A little mass, tuft, or bundle, as of hay.
3. (Archaic) A little mass of some soft or flexible material, such as hay, paper, or old rope yarn, used for retaining a charge of powder in a gun.