Improve; recover one's health. For example, I just started studying Japanese, and I hope to get better soon, or The doctor said I could expect to get better within a couple of days. Also see get well.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.