along

[uh-lawng, uh-long] /əˈlɔŋ, əˈlɒŋ/
preposition
1.
through, on, beside, over, or parallel to the length or direction of; from one end to the other of:
to walk along a highway; to run a border along a shelf.
2.
during; in the course of:
Somewhere along the way I lost my hat.
3.
in conformity or accordance with:
I plan to revise the article along the lines suggested.
adverb
4.
by the length; lengthwise; parallel to or in a line with the length or direction:
He ran along beside me.
5.
with a progressive motion; onward:
The police ordered the line to move along.
6.
(of time) some way on:
along toward evening.
7.
in company; in agreement (usually followed by with):
I'll go along with you. He planned the project along with his associates.
8.
as a companion; with one:
She took her brother along.
9.
from one person or place to another:
The order was passed along from the general to the captain and from the captain to a private.
10.
at or to an advanced place or state:
Work on the new ship is quite far along.
11.
as an accompanying item; on hand:
Bring along your umbrella.
12.
along of, Chiefly Southern U.S. and British Dialect.
  1. owing to; because of:
    We weren't invited, along of your rudeness.
  2. in company with:
    You come along of me to the store.
Verb phrases
13.
get along. get (def 36).
Idioms
14.
all along, all the time; throughout:
I knew all along that it was a lie.
15.
be along, Informal. to arrive at a place; come:
They should be along soon.
Origin
before 900; Middle English; Old English andlang, equivalent to and- (cognate with Old Saxon, Old Norse and-, Gothic and(a)-, Old High German ant-, prefix with orig. sense “facing”; cf. answer) + lang long1
British Dictionary definitions for all along

along

/əˈlɒŋ/
preposition
1.
over or for the length of, esp in a more or less horizontal plane: along the road
adverb
2.
continuing over the length of some specified thing
3.
in accompaniment; together with some specified person or people: he says he'd like to come along
4.
forward: the horse trotted along at a steady pace
5.
to a more advanced state: he got the work moving along
6.
along with, accompanying; together with: consider the advantages along with the disadvantages
plus
Word Origin
Old English andlang, from and- against + langlong1; compare Old Frisian andlinga, Old Saxon antlang
Word Origin and History for all along

along

prep.

Old English andlang "entire, continuous; extended; all day long; alongside of," from and- "opposite, against" (from Proto-Germanic *andi-, *anda-, from PIE *anti "against," locative singular of *ant- "front, forehead;" see ante) + lang "long" (see long (adj.)). Sense extended to "through the whole length of."

Idioms and Phrases with all along

all along

From the start, throughout, from end to end, as in I've known he was innocent all along. [ c. 1600 ]
Also see: all along the line

along

also see: