circlet

n. 1. A little circle; esp., an ornament for the person, having the form of a circle; that which encircles, as a ring, a bracelet, or a headband. [ 1913 Webster ]

Her fair locks in circlet be enrolled. Spenser. [ 1913 Webster ]

2. A round body; an orb. Pope. [ 1913 Webster ]

Fairest of stars . . . that crown'st the smiling morn
With thy bright circlet. Milton. [ 1913 Webster ]

3. A circular piece of wood put under a dish at table. [ Prov. Eng. ] Halliwell. [ 1913 Webster ]