A granddaughter of one's sibling; a daughter of one's nephew or niece. (Brother's granddaughter: fraternal grandniece. Sister's granddaughter: sororal grandniece.)

In the manner of a grandmother. / Having the characteristics of a grandmother.

plural of grandfather clause

Alternative spelling of granddad

Alternative spelling of great-grandmother

A parent of a great-grandparent, a grandparent of a grandparent and a great-grandparent of a parent.

(chess) A player of the highest rank, as determined by FIDE, with an Elo rating of at least 2500. / (chess, historical) Short for Grandmaster of the Soviet Union; USSR champion.

Alternative spelling of Grandmaster / A master in a field, whose skills or accomplishments exceed those of other masters.

plural of grandam

Misspelling of granddads.