Definition of "holdfasts" [holdfasts]

• Plural form of holdfast. (noun)

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• "When abundant, sea otters prey on, among other things, sea urchins that attach themselves to the "holdfasts" of huge strands of kelp."
• "These large seaweeds have strong holdfasts to grip the rock face, but with strong storms even these are ripped from the forest, the seaweeds becoming stranded en masse on the shore."
• "Rocketing from the sled, the wranglers alighted on the freighter, anchoring themselves to places on the hull with magclamps and suction holdfasts."