Entry: subdural (adj.)
In context: "...Gately feels adrenaline's warmth spread through him as his subdural hardware clicks deeper into a worn familiar long-past track."
Definition: Located or occurring beneath the dura mater.
Other: dura mater (n.): The dense, tough, outermost membranous envelope of the brain and spinal cord.
SNOOT score: 1
Source: Oxford English Dictionary