1. mind; spirit; soul; heart; ethos
彼はそう言うと、精神を集中させ始めた。Having said that, he began to concentrate his mind.
2. attitude; mentality; will; intention
私が君たちに求めていたのは、諦めない精神だ。What I wanted from you all was a never-give-up attitude.
3. spirit (of a matter); essence; fundamental significance