[1] : The Collaborative International Dictionary of English v.0.48

alongside \along"side`\, adv.
   along or by the side; side by side with; -- often with of;
   as, bring the boat alongside; alongside of him; alongside of
   the tree.
   1913 webster

[2] : WordNet (r) 2.0

alongside
     adv : side by side; "anchored close aboard another ship" syn: aboard
see also:
aboard 

Alongside >> A Words
Alongside, definition of term: Alongside
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