A grandmother. Compare "nan", "nana".
1950s; earliest use found in Gwyn Jones (1907–1999), writer and viking scholar. From Welsh nain grandmother, further etymology uncertain.
adjectiverare Scottish, Irish
Late 15th century. From ain, variant of own, with metanalysis.
More fully "Nain rug". A decorative carpet or rug of a kind made in the Iranian town of Nain, typically of very finely woven wool with softly coloured, often floral, motifs.
1950s. From Nain, the name of a small town in central Iran (Persian Nā'īn) where this style of carpet is made.