JETSAM Meaning of JETSAM in English [ 'dʒɛts(ə)m ]■ noun unwanted objects that have been thrown overboard from a ship and washed ashore. Compare with flotsam .OriginC16 (as jetson ): contr. of jettison . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004