单词	gribble
释义	gribble /ˈɡrɪb(ə)l / noun A small marine isopod crustacean that bores into submerged wooden structures, often causing damage to pier timbers. Limnoria lignorum, order Isopoda. Wood-boring marine crustaceans, called gribbles, have devoured portions of supporting timbers designed to stabilize a seawall built along the waterfront in Seattle, Washington.... The seagrass gribble burrows through blades of seagrasses, eating their soft internal tissues. Because gribbles usually attack wood ‘en mass’, the wood surface quickly becomes sharp and uneven because of all the holes and cavities. Origin Late 18th century: perhaps related to the verb grub.
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