1. verb /laɪt/
She lit her last match.
b) To set fire to.
I lit upon a rare book in a second-hand booksellers.
2. noun /laɪt/
a) The natural medium emanating from the sun and other very hot sources (now recognised as electromagnetic radiation with a wavelength of 400-750 nm), within which vision is possible.
As you can see, this spacious dining-room gets a lot of light in the mornings.
b) A source of illumination.
Put that light out!
3. adjective /laɪt/
a) having light
My bag was much lighter once I had dropped off the books.
We took a light aircraft down to the city.
Syn: lightweight, delicate, gentle, soft, lite, lo-cal, low-alcohol, inconsequential, trivial, unimportant
Ant: heavy, weighty, cumbersome, heavyweight, massive, forceful, strong, calorific, fatty, crucial, important
4. adverb /laɪt/
Carrying little.
I prefer to travel light.
Wikipedia foundation.