limiter

noun

Etymology: Etymology tree English limit Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English limiter From limit + -er.

1. That which limits or confines.

   “The limiter automatically put on the brakes to keep the machine from going too fast.”

2. A circuit that allows signals below a specified input threshold to pass unaffected while attenuating the peaks of stronger signals.
3. A friar who had a license to beg within certain bounds.