alongside

from WordNet (r) 3.0 (2006)

alongside
    adv 1: side by side; "anchored close aboard another ship" [syn:
           {aboard}, {alongside}]

from The Collaborative International Dictionary of English v.0.48

Alongside \A*long"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]