'Caution money' definitions:

Definition of 'Caution money'

From: GCIDE

Caution \Cau"tion\, n. [F. caution a security, L. cautio, fr. cavere (For scavere) to be on one's guard, to take care (orig.) to be on the watch, see; akin to E. show.]
1. A careful attention to the probable effects of an act, in order that failure or harm may be avoided; prudence in regard to danger; provident care; wariness. [1913 Webster]
2. Security; guaranty; bail. [R.] [1913 Webster]
The Parliament would yet give his majesty sufficient caution that the war should be prosecuted. --Clarendon. [1913 Webster]
3. Precept or warning against evil of any kind; exhortation to wariness; advice; injunction. [1913 Webster]
In way of caution I must tell you. --Shak. [1913 Webster]
4. (Civil & Scots Law) A pledge, bond, or other security for the performance of an obligation either in or out of judicial proceedings; the promise or contract of one not for himself but another; security. [Webster 1913 Suppl.]
Caution money, money deposited by way of security or guaranty, as by a student at an English university.
Syn: Care; forethought; forecast; heed; prudence; watchfulness; vigilance; circumspection; anxiety; providence; counsel; advice; warning; admonition. [1913 Webster]