He 'narrowly defines' [=describes very specifically] a hero as someone who has earned a medal in battle.
He was 'defined' by his passions. [=his passions showed what kind of person he was]
She believes that success should be 'defined in terms of' health and happiness.
(..) ...and tediousness the limbs and outward flourishes, I will be brief Your noble son is mad Mad I call it, for to define true madness, what is it but to be nothing else than mad? But let that go - More matter with less art - Madam, I swear I use no art at all (..)2015 Hamlet