Sentence:  Other river craft, “dubbed “douche boats,” were equipped with high-pressure water jets that could disintegrate enemy positions, including cement bunkers. The “<WSD>douche boat</WSD>” also performed an originally unanticipated support function: its water jets easily gouged out wet docks to expedite on-the-scene repairs for damaged river craft. 
Meaning of the word marked with <WSD> tags:  A river craft outfitted with a high-pressure water cannon capable of destroying enemy encampments.