According to https://www.eff.org/torchallenge/what-is-tor.html https://www.eff.org/torchallenge/what-is-tor.html they call them "middle relays, exit relays, and

According to https://www.eff.org/torchallenge/what-is-tor.html https://www.eff.org/torchallenge/what-is-tor.html they call them "middle relays, exit relays, and bridges".