I ran with all my might to the station.
That Chinese woman tried her best to persuade the prince to marry her, but she failed.
That zombie is using up all its strength trying to come back from the dead.
When you put all your power into something, you're putting your full effort into it. Hopefully that's what you put into your kanji learning as well!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.