wind instrument whose sound is produced by means of pipes arranged in sets supplied with air from a bellows and controlled from a large complex musical keyboard | a transparent optical device used to converge or diverge transmitted light and to form images |
(music) an electronic simulation of a pipe organ | electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons |
a free-reeded instrument with a piano keyboard in which air is forced through the reeds by bellows | biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina |
a fully differentiated structural and functional unit in an animal that is specialized for some particular function | (metaphor) a channel through which something can be seen or understood |
a periodical that is published by a special interest group | |
a government agency or instrument devoted to the performance of some specific function | |