Verb (5-dan, す, transitive)
1. to look (stare) back at (someone)
その言葉に俺は驚いて、彼女を見返す。I was surprised by those words and looked back at her.
2. to look at again; to re-examine
きっと俺はもう、その映画を見返すことはできない。I probably won't ever be able to watch that movie again.
3. to prove oneself superior (to someone who had previously been condescending); to put a person to shame; to get one's own back
しかし、なぜか今は、見返してやるといった気持ちにはならない。However, for some reason, I don't feel like getting my own back now.
Verb (5-dan, す, intransitive)
4. to look back (behind oneself)
そして、彼はもう一回歩き出したかと思いきや、また後ろを見返した。And just when I thought he had started walking again, he looked back behind him once more.