单词	holdfast
释义	holdfast noun hold·​fast ˈhōl(d)-ˌfast  1 : something to which something else may be firmly secured 2 a : a part by which a plant clings to a flat surface b : an organ by which a parasitic animal attaches itself to its host Example Sentences Recent Examples on the Web Trilobites would scuttle across the ocean floor past primitive sea anemones gripping the bottom with their fleshy holdfasts. Michael Greshko, National Geographic, 21 Mar. 2019 State rules required cutters to trim above the lowest branches and no closer than 40 centimeters from the holdfast—the sturdy foot with which rockweed grips the shore—to allow the plants to regrow after each haircut. Ben Goldfarb, Smithsonian, 31 May 2018 The vine also produces holdfasts, and is consequently an excellent tree climber, growing aggressively upward, eventually strangling its host. Dave Taft, New York Times, 20 Jan. 2017 Word History First Known Use 1566, in the meaning defined at sense 1 Medical Definition holdfast noun hold·​fast ˈhōl(d)-ˌfast  : an organ by which a parasitic animal (as a tapeworm) attaches itself to its host
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