A field on which a game, especially a ball game, is played. / (figuratively) Any place or context within which competitive activity takes place, such as market competition between companies.

(pharmacology) An antimalarial drug C₁₇H₁₆F₆N₂O similar to quinine that consists of a fluorinated derivative of quinoline and is used in the form of its hydrochloride for the prevention and treatme...

(fishing) A line fastening a fish-hook.

Not choroidal.