/ riːθ; NAmE / noun ( pl. wreaths / riːðz; NAmE /)
1.
an arrangement of flowers and leaves, especially in the shape of a circle, placed on graves, etc. as a sign of respect for sb who has died :
The Queen laid a wreath at the war memorial.
2.
an arrangement of flowers and/or leaves in the shape of a circle, traditionally hung on doors as a decoration at Christmas :
a holly wreath
3.
a circle of flowers or leaves worn on the head, and used in the past as a sign of honour :
a laurel wreath
4.
( literary ) a circle of smoke, cloud, etc.
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WORD ORIGIN
Old English writha , related to writhe .