a natural white mineral that is added to food to make it taste better or to preserve it:
This might need some salt and pepper.
a pinch of salt (=a very small amount)
Could you pass the salt?
someone who is ordinary but good and honest
to not completely believe what someone tells you, because you know that they do not always tell the truth:
Most of what he says should be taken with a pinch of salt.
4 [countable] technicalHC
a type of chemical substance that is formed when an acid is combined with a base