noun

• (slang, vulgar, derogatory, offensive, ethnic slur) A person of (South) East Asian descent; originally a native of the Philippines, but now especially:
• (US, derogatory) A Korean person (especially during the Korean War).
• (US, derogatory) A Vietnamese insurgent in the Vietnam War, particularly a member of the Vietcong.
• (dated, derogatory) A foreigner (to the speaker), especially the (enemy) natives of a place the speaker's military is at war with or in.
• (Rhodesia, derogatory) A black insurgent in the Rhodesian Bush War.
• (informal) Grime or mud.
• (slang) A dull or hapless person.