To examine a sample of (someone's) deoxyribonucleic acid. / (US, military) To put under a DNA order because of mental illness.

(US, or of Mexico) a ranch or rancho worker / (US, or of Mexico) A ranch or rancho owner

The state or quality of being combustible.

(meteorology, UK) A cold-core low-pressure system aloft that is cut off from the westerlies.