castigatory adjective 1noun 1forms 3 adjective1 •Serving or tending to castigate. noun1 •(no longer used) An instrument formerly used to punish and correct women whose behavior was considered unseemly; the ducking stool or trebucket.For which offence she may be indicted; and , if convicted , shall be sentenced to be placed in a certain engine of correction called the trebucket , castigatory, or ducking stool — 1765 formscastigatories · more castigatory · most castigatory