trusty

adj

1. Reliable or trustworthy.

   “She's been using the same trusty sewing machine since she started out, thirty long years ago.”

noun

1. A trusted person, especially a prisoner who has been granted special privileges.

   “We usta have a rule that if a trusty shot an escaping convict, then the trusty would go free.”

   “The cell block is clean and doesn't smell of disinfectant. The trusties do all the work. The supply of trusties is always ample.”

name

1. A surname.