I relaxed like it was my own home.
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means tolerance, so the verb version is what happens when you're a really tolerant person. You're able to relax and to feel at home because nothing really gets to you.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
You want to relax so you go down to old coots road (くつろ). It's a road with a bunch of old coots who don't bother nobody. They just kinda sit around and complain. That's where you like to relax. Something about being surrounded by a bunch of old coots on old coots road makes you feel at home.