A careful attention to the probable effects of an act, in order that failure or harm may be avoided.
A formal warning given as an alternative to prosecution in minor cases.
Security; guaranty; bail.
A yellow card.
Prudence when faced with, or when expecting to face, danger; care taken in order to avoid risk or harm.
To warn; to alert, advise that caution is warranted.
To give a yellow card
An indication that a potentially bad or dangerous situation could develop.
A signal set at danger and showing a red light or other stop indication, which a train driver must not pass until it changes or until manually cleared past the signal by a dispatcher.