The Collaborative International Dictionary of English v.0.48:
Trawler \Trawl"er\, n. 1. One who, or that which, trawls. [1913 Webster] 2. A fishing vessel which trails a net behind it. [1913 Webster]WordNet (r) 3.0 (2006):
trawler n 1: a fisherman who use a trawl net 2: a fishing boat that uses a trawl net or dragnet to catch fish [syn: trawler, dragger]