crampon

An attachment to a shoe or boot that provides traction by means of spikes for climbing or walking on slippery surfaces, especially ice.

Biology, Botany, Natural sciences An aerial rootlet for support in climbing, as of ivy.

Government, Heraldry, Hobbies, Lifestyle, Monarchy, Nobility, Politics A heraldic figure in the form of a bar bent at the ends into the form of a hook.