What is the meaning of Kelp?

Any of several large brown algae seaweeds (especially of order Laminariales).

The calcined ashes of seaweed, formerly used in glass and iodine manufacture.

To gather kelp.

A hook or crook by which a pot is hung over a fire.

A sheath.

kelp (Laminariales order algae)

kelp

alternative form of quelpo

Source: wiktionary.org