Webster’s Revised Unabridged Dictionary · 1913
Castigatory
Cas′ti·ga·to·ry (·gȧ·tō·ry̆), a. [L. castigatorius.] Punitive in order to amendment; corrective.
Cas′ti·ga·to·ry, n. An instrument formerly used to punish and correct arrant scolds; — called also a ducking stool, or trebucket. Blacktone.