noun

1. 1. a tolerating or being tolerant, esp. of views, beliefs, practices, etc. of others that differ from one's own
   2. freedom from bigotry or prejudice
2. an allowable deviation from a standard or from the theoretical ideal, esp. in the manufacture or assembly of components; specif.,
   1. the amount that coins are legally allowed to vary from a standard of weight, fineness, etc.
   2. the difference between the allowable maximum and minimum sizes of a part or fitting
3. the ability to endure
4. Med. the natural or developed ability to resist the effects of the continued or increasing use of a drug, etc.

Etymology: ME tolleraunce < MFr tolerance < L tolerantia