胆 - gall bladder, courage, pluck

ulterior motive; plot; scheme

gallstone

discouragement; despondency; dejection; disappointment

bold; daring; audacious

bile duct

daring; fearless; audacious; bold; dauntless; daredevil

courage; nerve; grit

courage; guts; nerves of steel

bile acid

bile duct

heart

dried bear's gallbladder (used in traditional Chinese medicine)