gater

noun2

1. •
   A mechanism that saves power in a circuit by removing the clock signal while the circuit is not in use.

   • Optimizing the selection of clock gaters based on activity is known as power-driven clock gating. — 2012
2. •
   A component of a neural network that determines the probability that each member of a set of predictors will be selected.

   • In the same spirit, one can use a neural network called the gater to select which one out of several expert networks will be used to compute the output, given the current input. — 2015