Wordnet 3.0
NOUN (2)
1. 
 any of various flat-bottomed boats with sloping ends; 
2. 
 a barge carrying bulk materials in an open hold; 
The Collaborative International Dictionary of English v.0.48:
Scow \Scow\ (skou), n. [D. schouw.] (Naut.)
   A large flat-bottomed boat, having broad, square ends.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Scow \Scow\, v. t.
   To transport in a scow.
   [1913 Webster]
WordNet (r) 3.0 (2006):
scow
    n 1: any of various flat-bottomed boats with sloping ends
    2: a barge carrying bulk materials in an open hold