lens

nouns

a transparent optical device used to converge or diverge transmitted light and to form images
lens, lens system, lense
(metaphor) a channel through which something can be seen or understood
"the writer is the lens through which history can be seen"
lens
domain usage
language used in a figurative or nonliteral sense
figure, figure of speech, image, trope
is a type of (narrower)
(often plural) a means of communication or access
"it must go through official channels"; "lines of communication were set up between the two firms"
channel, communication channel, line
biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina
crystalline lens, lens, lens of the eye
electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
electron lens, lens