English definition of “light”
NOT HEAVY › not heavy: light clothing/machinery I can carry both bags - they're quite light.
NOT MUCH › small in amount: light rain/snow The traffic's much lighter than I expected. I only had a light lunch.
NOT STRONG › not strong or not forceful: a light breeze a light embrace
PALE › Light colours are pale: light brown/green a light blue cardigan
NOT SERIOUS › easy to understand and not serious: light entertainment I'm taking some light reading on holiday.
make light of sth › to talk or behave as if you do not think a problem is serious: I just laughed and tried to make light of it.
it is light › it is bright from the sun: Let's go now while it's still light. lightness noun [U]