n.
1.a chemical reaction in which an acid and a base interact with the formation of a salt
2.action intended to keep a country politically neutral or exclude it from a possible war
3.(euphemism) the removal of a threat by killing or destroying it (especially in a covert operation or military operation)
4.action intended to nullify the effects of some previous action
Idiom of the Day
take apart (something) or take (something) apart
to separate the parts of something, to disassemble something
I took apart the watch easily but it never worked again.