titty [ˈtʰɪɾi]noun 4forms 1phrases 1 noun4 •(slang, vulgar) A breast.That hot bird will show you her titties for a fiver, mate! •(slang, vulgar) A nipple.And I tried to suck your titty hole for milk for my Cheerios — 2012 •(Scotland, informal) A sister or girl. •(informal) A kitten. formstitties Phrases with titty tough tittyUsed to acknowledge a listener's misfortune while denying them sympathy.