Wordnet 3.0
NOUN (1)
1.
someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation;
[syn: pirate, buccaneer, sea robber, sea rover]
The Collaborative International Dictionary of English v.0.48:
Sea robber \Sea" rob"ber\
A pirate; a sea rover.
[1913 Webster]
WordNet (r) 3.0 (2006):
sea robber
n 1: someone who robs at sea or plunders the land from the sea
without having a commission from any sovereign nation [syn:
pirate, buccaneer, sea robber, sea rover]