(n): a device for producing or controlling light
(n): genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils
(n): a genus of dicotyledonous plants
(n): (metaphor) a channel through which something can be seen or understood
(n): (often plural) a means of communication or access
(n): biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina
(n): a fully differentiated structural and functional unit in an animal that is specialized for some particular function
(n): electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
(n): equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor)