A rule that prevents a potential competitor from entering the Olympic Games unless they take part in an international event and are placed in the top 30% or the top 50 competitors, whichever is fewer.

(tennis) An official who watches the lines of the court and judges whether the ball has landed in or out and also declares foot faults.

any silicate having interlocking chains of silicate tetrahedra

A census-designated place in Maui County, Hawaii, United States.