noun
plural pains
the physical feeling caused by disease, injury, or something that hurts the body [noncount]
mental or emotional suffering :sadness caused by some emotional or mental problem [noncount]
[singular] informal :someone or something that causes trouble or makes you feel annoyed or angry
be at pains
to try hard to do something
feel no pain
go to great pains
or take (great) pains
to be careful in doing something :to try hard to do something - followed by to + verb
no gain without pain
no pain, no gain
on/under pain of
formal :at the risk of being given (a particular form of punishment)
verb
pains; pained; paining
[+ obj] formal :to cause (someone) to feel emotional pain :to make (someone) upset, sad, worried, etc.