exersis
Definitions (by source)
(spiritual) excrcise, ‘ exercicio,’ 5593, 5712, 5978. [Cf. nach [bí] dexersís againn acht na copáin, An Síoladóir, 11, 187, = Walsh, Gleanings, 2 ed., 195.]
Desiderius, otherwise called Sgáthán an Chrábhaidh. Editor: Thomas F. O’Rahilly.