Meaning of 気合負 in Japanese

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Definition of 気合負

ふ(fu) 【負】

きあい(kiai) 【気合 ·気合い】

(n) scream; yell; fighting spirit
チームは試合に向けて気合いが入っている。
The team is up for the game.

おい(oi) 【笈 ·負】

(n) wooden box carried on one's back to store items for a pilgrimage
あ、あれ？なんか・・・すっごい負のオーラを感じますよ？
E-eh? I somehow seem to feel a very threatening aura...