also: しゃ
Archaic second-person pronoun, often used in old texts or as a rough, vulgar form in modern contexts. The reading い is more common; しゃ is rarer.
In classical Japanese, 汝 was read as い and referred to the listener.
In period dramas, there are scenes where characters say things like '汝、許せ' (You, forgive me).
Archaic reading of 汝; less common than い.
The reading い is an archaic native Japanese second-person pronoun; 汝 supplies a semantic written representation meaning “you.”