Related Clues:

• Word on a communal towel?
• Relative of mine?
• Yours and mine take some time, it's said
• Towers used in the Bastille for beheading of the Queen?
• Royal mine for a long time, we hear?
• Taking the middle course is for us
• Said periods of time belonging to us
• Sounds just a matter of time for us
• Opposite of theirs
• '___ is not to reason why'
• A long time on the radio offering what's yours and mine
• 'Yours, Mine and ___'
• Partnership indicator
• What you and I have
• Partners' pronoun