Something that corrects or counteracts.
A medicine, application, or treatment that relieves or cures a disease.
The accepted tolerance or deviation in fineness or weight in the production of gold coins etc.
The legal means to recover a right or to prevent or obtain redress for a wrong.
To provide or serve as a remedy for.
A person who is not good enough to be considered proficient but may be useful as a backup.
A person who plays second string. A person who is kept on a sports team as a backup in case a "first-string" player is unavailable.