head-and-gut fleet
n.— «The Alaska Ranger’s sinking claimed four lives and left a fifth crew member missing. It was the latest in a series of accidents among the head-and-gut fleet, which uses longlines and trawl nets to catch sole and other fish that are then frozen onboard.» —“Head-and-gut fleet under scrutiny” by Hal Bernton Seattle Times (Washington) Mar. 25, 2008. (source: Double-Tongued Dictionary)
Further reading
In 1968, students at Cheyenne High School in Cheyenne, Wyoming, compiled a collection of their own slang, including the word Clyde, used to refer to one’s head, as in Use your Clyde! This is part of a complete episode.
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