anchor-plate

from The Century Dictionary.

• noun Nautical, the metal resting-place for the fluke of the anchor when the latter is fished. See fish, 6 .
• noun A heavy metal plate to which is secured the extremity of a cable of a suspension-bridge. See cut under anchorage.
• noun In zoology, one of the calcareous plates to which the anchors or ancoræ are attached, as in members of the genus Synapta. See ancora.