1 prep If one thing is alongside another thing, the first thing is next to the second.
He crossed the street and walked alongside Central Park..., Much of the industry was located alongside rivers.
Alongside is also an adverb., adv ADV after v
He waited several minutes for a car to pull up alongside.
2 prep If you work alongside other people, you all work together in the same place.
He had worked alongside Frank and Mark and they had become friends...
3 prep If one thing exists or develops alongside another, the two things exist or develop together at the same time.
Her self-confidence will develop alongside her technique...
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