þín

Part of speech: possessive pronoun

(Gen case of pers pron þú) thy, thine; referring to 2nd pers sing: your(s) (also ðín)

Etymology

[Mod E arch THINE, THY ← Prot-Germ *þīnaz; Goth þeins; O Fris thīn; O Sax thīn; Dt dijn; OHG dīn (Mod G dein); O Icel þín, þinn (Mod Icel þinn); Sw din]