Wiktionary
n. The minimum intensity or duration of a sensory stimulus applied to a living being at which it becomes considered painful.
WordNet
n. the lowest intensity of stimulation at which pain is experienced; "some people have much higher pain thresholds than do other people"
Usage examples of "pain threshold".
A good buddy in the department once said that Hardshell Shaw's pain threshold was between that of a rhinoceros and a wooden fence post.
But in the middle of the third year, loneliness had intervened: an ache that no amount of self-inflicted punishment (muscles driven to the pain threshold and beyond, day after day) could disguise.
If we keep him below the pain threshold during the redaction, he won't be able to assist us.
Their taunting yells and screeches were just shy of the auditory pain threshold, and it was a relief for both women when the drugstore door closed behind them.
Does it not appear as if one who lived habitually on one side of the pain threshold might need a different sort of religion from one who habitually lives on the other?
And if you had a high enough pain threshold, you might continue to say it no matter what kind of messages I pump into your central nervous system.
She was in such euphoria that the claustrophobic feel of the helmet didn't bother her, nor did the pain threshold nerve jab do more than make her giggle.