Shabbos (118b): R’ Yossi said, I have never called my wife “my wife” or my ox “my ox”, but rather I called my wife “my home” and my ox “ I called “my field.”
Rashi (Gittin 52a): I called my wife my home – that is because all the necessities of the home are done through her and thus she is the main entity of the home. Similarly the ox is the main part of the field.
Meiri (Shabbos 118b): A person should always use refined language. An example is that one talmid chachom said, “I never call my wife “my wife” nor my ox “my ox”. Rather I call my wife “my home” and my ox “my field.”
Daf ahl Daf (Shabbos 118b): … The reason why he always referred to his wife as “my home” is because all the honor of the woman is to be inside (Tehilim 45) and it is not the manner for a woman to go out of the house. Therefore she is the principle member of the home and that is why he called her “my home.”