Anchor
An anchor is a device, normally made of metal, used to connect a vessel to the bed of a body of water to prevent the craft from drifting due to wind or current. The word derives from Latin "ancora", which itself comes from the Greek ἄγκυρα ("ankura").
Anchor (climbing)
An artificial anchor consists of man-made climbing gear placed in the rock. Such gear includes spring-loaded camming devices, aluminum chockstones, steel expansion bolts, and pitons. Artificial anchors may be permanent or removable.