meus

Meus, mea, meum is a possessive adjective and agrees with the thing owned rather than the owner, so a woman still says liber meus of her book. It declines regularly apart from one form worth memorising, the masculine vocative singular mi, as in mi fili. Latin drops possessives whenever ownership is obvious, so when meus does appear it is doing work, and it usually follows its noun, domus mea, unless the writer wants the emphasis at the front.