Cau"tion*a*ry (?), a.
1.
Conveying a caution, or warning to avoid danger; as, cautionary signals.
2.
Given as a pledge or as security.
He hated Barnevelt, for his getting the cautionary towns out of his hands.
Bp. Burnet.
3.
Wary; cautious.
[Obs.]
Bacon.
© Webster 1913.