Definition of parietary in US English:

parietary

noun

  • Either of two plants of the genus Parietaria (family Urticaceae), P. officinalis and P. judaica (pellitory of the wall).

Origin

Late Middle English; earliest use found in Geoffrey Chaucer (c1340–1400), poet and administrator. From (i) Anglo-Norman paritarie and Middle French paritaire (13th cent. in Old French; Middle French (Namur) peritaire, Middle French, French pariétaire)).

Pronunciation

parietary

/pəˈrʌɪət(ə)ri/