..as they used to say in the Reader's Disgust.

FIDICINALES: [what]anatomists [call] the muscles of the fingers called lumbricales, from the use they are put to by musicians in playing some instruments.
-Nathanial Bailey's Etymological English Dictionary, 1749.

From fidicen, a harper
-Richard Hoblyn's Medical Dictionary, 1859,

Fidicinal, of or pertaining to a player on stringed instruments.
-Sir James Murray's New English Disctionary, 1901.


RtS
(No, don't thank me, consider it my Xmas gift to you all [cheapskate!])