holdfast
nounUK /ˈhəʊldfɑːst/
US /ˈhoʊldfæst/
A holdfast is a strong root-like part that keeps a plant or sea creature stuck to a rock or surface.
The seaweed used its holdfast to cling tightly to the rock.
RELATED WORDS
OTHER MEANINGS
2. A strong grip or firm hold on something.
He kept a holdfast on the rope as the wind blew.
3. A sturdy metal plate or bracket used to fasten something in place.
The builder screwed a holdfast into the wall to secure the shelf.
4. A person or thing that provides firm support or security.
Her family was a holdfast during hard times.