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1.
discarded cargo equipment
There is some jetsam on the coastline.
by Alexi August 04, 2003
 
2.
1. One who steals pharmaceuticals earmarked for his/her significant other.

2. One who consistently drops baggies in toilets and sinks depite frequent requests from friends to "be careful".
No wonder they hid the coke from him he's a jetsam through and through.
by cervixexpress March 16, 2005
 
3.
Applies to personal items collected from Airline passengers at gate security terminals.
Fred the security guard at Gate A gazed lazily at the large boxes of jetsam collected from airplane passengers in the last three hours of his shift.
by Jerry Swayne September 11, 2006
 
4.
1. One who steals pharmaceuticals earmarked for his/her significant other.

2. One who consistently drops baggies in toilets despite frequent requests from friends to "be careful".
No wonder they hid the coke from David - he can't escape his jetsam past.
by cervixexpress March 16, 2005
 
5.
A neopet on the site called neopets.com
A jetsam is a shark-like neopet.
by Alexi August 02, 2003