jewel

jewel is a Noun

Definition:

[1] An ornament of dress usually made of a precious metal, and having enamel or precious stones as a part of its design. Plate of rare device, and jewels Of rich and exquisite form. Shak.

[2] A precious stone; a gem. Shak.

[3] An object regarded with special affection; a precious thing. "Our prince (jewel of children)." Shak.

[4] A bearing for a pivot a pivot in a watch, formed of a crystal or precious stone, as a ruby. Jewel block (Naut.), block at the extremity of a yard, through which the halyard of a studding sail is rove.