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

jetsam \jet"sam\, jetson \jet"son\, n. f. jeter to throw: cf.
   of. getaison a throwing. cf. flotsam, jettison.
   1. mar. law goods which sink when cast into the sea, and
      remain under water; -- distinguished from flotsam, goods
      which float, and ligan or lagan, goods which are
      sunk attached to a buoy.
      1913 webster

   2. the act of throwing objects from a ship to lighten the
      load; jettison1. see jettison, 1.
      1913 webster

   3. hence: anything thrown overboard from a ship, whether
      floating or not.
      pjc

   4. hence: fig. objects scattered about in a disorderly
      manner; as, he couldn't find his sneakers among the jetsam
      in his room. colloq.
      pjc
see also:
flotsam jettison flotsam ligan lagan 

[2] : WordNet (r) 2.0

jetsam
     n 1: the part of a ship's equipment or cargo that is thrown
          overboard to lighten the load in a storm
     2: the floating wreckage of a ship syn: flotsam
see also:
flotsam 

[3] : Moby Thesaurus II by Grady Ward, 1.0

19 moby thesaurus words for "jetsam":
   castaway, castoff, derelict, discard, dogie, flotsam,
   flotsam and jetsam, foundling, junk, lagan, orphan, refuse, reject,
   rubbish, trash, waif, waifs and strays, wastrel, wreckage

Jetsam >> J Words
Jetsam, definition of term: Jetsam
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