||A defective product,
or anything that doesn't work very well; something which breaks
constantly, particularly a car
||1) Tom's new car
turned out to be a lemon.
2) My new
computer is a lemon, I should just throw it out the window.
||A 'lemon' is a
citrus fruit with a tart or sour (not sweet) flavor. In the 1800's,
people started using the word 'lemon' to describe people who were sour
(or unfriendly). Over time, 'lemon' came to refer to anything that was
defective or broken.