rosette

Noun

• circular window filled with tracery

• a cluster of leaves growing in crowded circles from a common center or crown (usually at or close to the ground)

• rhizoctinia disease of potatoes

• an ornament or pattern resembling a rose that is worn as a badge of office or as recognition of having won an honor

Related words

• Synonyms: 
  rose window , little potato , russet scab , stem canker