Usage of the character 膽

inner container (e.g. the rice pot inside a rice cooker, the vacuum bottle inside a thermos, the tank inside a hot water heater, the bladder of a football)

fàngdǎn

放胆

[放膽]

to act boldly

dǎnqiè

胆怯

[膽怯]

timidity
timid
cowardly

xióngdǎn

熊胆

[熊膽]

bear gall (used in TCM)

dàdǎn

大胆

[大膽]

brazen
audacious
outrageous
bold
daring
fearless

dǎnzi

胆子

[膽子]

courage
nerve
guts

gūdǎn

孤胆

[孤膽]

solitary hero
maverick

dǎndào

胆道

[膽道]

bile duct

dǎnlüè

胆略

[膽略]

courage and resource

dǎnjiǎn

胆碱

[膽鹼]

choline (amine related to vitamin B complex)

dǒudǎn

斗胆

[斗膽]

(courteous) to be so bold as to

sèdǎn

色胆

[色膽]

boldness in pursuing one's sexual urges

shǔdǎn

鼠胆

[鼠膽]

cowardly

dǎnzhī

胆汁

[膽汁]

gall
bile

lóngdǎn

龙胆

[龍膽]

rough gentian
Japanese gentian (Gentiana scabra)

dǎnpò

胆魄

[膽魄]

boldness; daring

dǎnliàng

胆量

[膽量]

courage
boldness
guts

dǎnhán

胆寒

[膽寒]

to fear
to be terrified

shédǎn

蛇胆

[蛇膽]

snake gall (used in TCM)

dǎnlì

胆力

[膽力]

courage
bravery

hǎidǎn

海胆

[海膽]

sea urchin

dǎnxiǎo

胆小

[膽小]

cowardice
timid

dǎnr

胆儿

[膽兒]

see 膽子／胆子 (dǎnzi)

zhuàngdǎn

壮胆

[壯膽]

to get one’s courage up
to embolden

kǔdǎn

苦胆

[苦膽]

gallbladder

dǎnjiéshí

胆结石

[膽結石]

gallstone

lóngdǎnzǐ

龙胆紫

[龍膽紫]

gentian violet C25H30ClN3
crystal violet

dǎnlüsù

胆绿素

[膽綠素]

biliverdin

xióngdǎncǎo

熊胆草

[熊膽草]

Conyza blinii

xiàpòdǎn

吓破胆

[嚇破膽]

to be scared out of one's wits
to scare stiff

dǎnxiǎoguǐ

胆小鬼

[膽小鬼]

coward

dǎnhóngsù

胆红素

[膽紅素]

bilirubin

dǎngùchún

胆固醇

[膽固醇]

cholesterol

yǒudǎnliàng

有胆量

[有膽量]

courageous

dǎnsèsù

胆色素

[膽色素]

bilirubin

dǎnshízhèng

胆石症

[膽石症]

gallstone

tíxīndiàodǎn

提心吊胆

[提心吊膽]

(saying) to be very scared and on edge

míngmùzhāngdǎn

明目张胆

[明目張膽]

openly and without fear
brazenly

dúdǎnyīngxióng

独胆英雄

[獨膽英雄]

bold and courageous hero (idiom)

yǒusèwúdǎn

有色无胆

[有色無膽]

to be perverse and suggestive towards the opposite sex, but shrinking back when provoked to act on it
to have perverted thoughts but no guts to actually do it
to be all talk and no action

pòdǎnhánxīn

破胆寒心

[破膽寒心]

to be scared out of one's wits

dǎndàbāotiān

胆大包天

[膽大包天]

reckless
extremely daring

lónggānfèngdǎn

龙肝凤胆

[龍肝鳳膽]

rare food
ambrosia (delicacy)

qīngxīntǔdǎn

倾心吐胆

[傾心吐膽]

to pour out one's heart (idiom)

gāndǎnxiāngzhào

肝胆相照

[肝膽相照]

to treat one another with absolute sincerity (idiom); to show total devotion

yǐxiāndǎnjiǎn

乙酰胆碱

[乙酰膽鹼]

acetylcholine ACh (amine related to vitamin B complex)

xīndǎnjùliè

心胆俱裂

[心膽俱裂]

to be scared out of one's wits (idiom)

gǒudǎnbāotiān

狗胆包天

[狗膽包天]

extremely daring (idiom)
foolhardy

gūdǎnyīngxióng

孤胆英雄

[孤膽英雄]

solitary hero
maverick

dǎnxiǎorúshǔ

胆小如鼠

[膽小如鼠]

(idiom) chicken-hearted; gutless

yīshēnshìdǎn

一身是胆

[一身是膽]

devoid of fear (idiom)
intrepid

dǎnzhànxīnjīng

胆战心惊

[膽戰心驚]

to tremble with fear (idiom)
scared witless

suìxīnlièdǎn

碎心裂胆

[碎心裂膽]

in mortal fear (idiom)

wòxīnchángdǎn

卧薪尝胆

[臥薪嘗膽]

lit. to sleep on brushwood and taste gall (like King Gou Jian of Yue 勾踐／勾践 ( Gōu Jiàn)), in order to recall one's humiliations) (idiom)
fig. to maintain one's resolve for revenge

wòxīnchángdǎn

卧薪尝胆

[臥薪嚐膽]