tunable

adj

1. (archaic)Harmonious, melodic, tuneful.

   “Then doe all with a tunable voice of shouting bid him welcome.”

   “she rather chose to follow the Fortunes of a Wheel-Barrow, than those of a Distaff; daily, charming the Ears of the Publick with the Tuneable and Melodious Cry, of, Come who throws here? Who ventures for an ORANGE?”

2. Able to be tuned.

noun

1. A setting that can be configured.

   “If you are working with TCP, some specific tunables are also available. By default, some TCP tunables have a value that is too low.”