n.1 the act or an instance of suggesting; the state of being suggested.
2 a theory, plan, etc., suggested (made a helpful suggestion).
3 a slight trace; a hint (a suggestion of garlic).
4 Psychol. a the insinuation of a belief etc. into the mind. b such a belief etc.
Etymology: ME f. OF f. L suggestio -onis (as SUGGEST)