n.
1.a transparent optical device used to converge or diverge transmitted light and to form images
2.genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils
3.(metaphor) a channel through which something can be seen or understood
4.biconvex transparent body situated behind the iris in the eye
5.electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
Idiom of the Day
thumb through (something)
to look through a book/magazine/newspaper without reading it carefully
I thumbed through several magazines while I was waiting for the dentist.