mon·i·to·ry 
(mŏnĭ-tôr′ē)
(mŏnĭ-tôr′ē)adj.
Conveying an admonition or a warning: a monitory glance.
n. pl. mon·i·to·ries
A letter of admonition, such as one from a bishop or ecclesiastical court.
[Middle English monitorie, letter of admonition, admonitory, from Medieval Latin monitōria, admonition, from feminine of Latin monitōrius, monitory, from monitor, monitor; see MONITOR.]