ship’s anchor
The traditional anchor is made up of a shank with a stock at one end and two arms ending in palms at the other end.
stock 
Transverse rod perpendicular to the shank; it positions the anchor so that its two arms grip the bottom of the water.
palm 
Flat pointed part at the end of the arm; it sinks into the bottom of the water to grip it.
ring 
Heavy ring through the eye at the end of the shank; the anchor’s cable or rope is attached to it.
hoisting ring 
Small ring at the anchor’s center of gravity; a rope is attached to it, which is pulled to dislodge the anchor from the bottom of the water.
arm 
Shank that curves out from the bottom end of the main shank and ends in a palm.