One of 102 counties in Illinois, United States. County seat: Jerseyville.

(medicine) The use of ultrasound to produce diagnostic images of the internal organs of the body, or of a foetus. / The use of ultrasound to form images of underwater structures.

(US, slang) A member of the Delta Kappa Epsilon fraternity, founded at Yale College in 1844.

An assassin who carries out counterassassination.