noun
plural -tions
[noncount] :care taken to avoid danger or risk :a careful attitude or way of behaving
a warning telling someone to be careful [count]
[count] Brit law :a spoken official warning given to someone who has done something illegal but has not committed a serious crime
throw/fling/cast caution to the wind
to stop being careful and do something that is dangerous or that might result in failure
verb
-tions; -tioned; -tioning
to warn or tell (someone) about a possible danger, problem, etc. [+ obj]
+ against
[+ obj] Brit law :to give a caution to (someone)