Contents

EnglishEdit

 
a workbench holdfast

EtymologyEdit

hold +‎ fast

NounEdit

holdfast ‎(plural holdfasts)

  1. Something to or by which an object can be securely fastened.
  2. (zoology) A root-like structure that anchors aquatic sessile organisms, such as seaweed, other sessile algae, stalked crinoids, benthic cnidarians, and sponges, to the substrate.
  3. (archaic, medicine) Actinomycosis.

See alsoEdit