D defs.my
Entry 1 sense Webster, 1913

Avuncular

/əv-ŭng'-kyəl-ẽr/ · A·vun·cu·lar · IPA /əˈvʌŋkjʊlɚ/
01 a. Of or pertaining to an uncle.
  1. 1.
    Of or pertaining to an uncle.
    “In these rare instances, the law of pedigree, whether direct or avuncular, gives way.” I. Taylor.