|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|Watson-Watt (wŏt'sən-wŏt') Pronunciation Key
British physicist who pioneered the development of radar. In 1919 he produced a system for locating thunderstorms by tracking their radio emissions. In the 1930s Watson-Watt led the team that developed radar into a practical system for locating aircraft.