1 〔肝臓〕the liver
2 〔家畜の内臓〕innards, viscera，((口)) guts; 〔鳥の〕giblets
II 〔勇気〕pluck; ((口)) guts
Although young, he has nerves of steel.
be a coward; be cowardly; be chicken-livered; be lily-livered; be yellow
have pluck; ((口)) have guts [spunk]
I took my teacher's warning to heart.
I tackled the difficult problem with determination.
I was frightened out of my wits by the sudden thunderous noise.
I was scared (half) to death when I thought we were going to crash.