English definition of “better”
QUALITY › comparative of good adjective: of a higher quality, more effective, or more enjoyable than something or someone else: Jeff's been offered a better job in the States. The sales figures were better than expected. Her English has got a lot better (= improved) recently. It would have been better to have discussed the problem first.
ILLNESS › healthy, or less ill than before: I feel much better. I hope you get better soon.
the bigger/brighter/hotter, etc the better › used to say that the bigger, brighter, hotter, etc something is, the more pleased you will be