Pat /pæt/noun 1forms 1phrases 3 noun1 •(slang, offensive) An Irish person.I'll do it, sir, by the honor of the Pats, just take your two good looking selves into the garden, […] — 1868 formsPats Phrases with Pat pat downTo frisk; to check someone's body for concealed items, especially weapons. pat on the backPraise, congratulations. stand patTo play one's hand without drawing any more cards.