holdfast
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hold·fast

noun \ˈhōl(d)-ˌfast\

Definition of HOLDFAST

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

First Known Use of HOLDFAST

1566

hold·fast

noun \ˈhōl(d)-ˌfast\   (Medical Dictionary)

Medical Definition of HOLDFAST

: an organ by which a parasitic animal (as a tapeworm) attaches itself to its host

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