Percy UK /ˈpɜːsi/US /ˈpɜɹsi/ noun[before a noun]4 •(slang, offensive) A male person regarded as unmanly or weak; a sissy.He never palliated his villainy, never helped old ladies across the street to show that he was a sweet kid au fond or prated about his Oedipus complex like the Percy boys who portray heavies today. — 1957 •(slang, offensive) A male conscientious objector. •(UK, slang) Chiefly in point Percy at the porcelain: the penis. •(slang, offensive) An educated soldier; specifically, an officer. formsPercies