心しん臓ぞう

noun

guts; nerve; cheek; gall

Figurative use for boldness, audacity, or shamelessness. Often used in phrases like 心臓が強い (thick-skinned) or 心臓に毛が生えている (shameless).

• あんなに平へい然ぜんと嘘うそをつくなんて、心しん臓ぞうに毛けが生はえている。

  Lying so calmly like that, he must have nerves of steel.

• 彼かの女じょは心しん臓ぞうが強つよいから、批ひ判はんされても気きにしない。

  She's thick-skinned, so she doesn't mind criticism.

noun

heart (of something); central part

Metaphorical use for the core or central part of a system, organization, or place. Common in compounds like 心臓部.

• この地ち域いきは経けい済ざいの心しん臓ぞう部ぶだ。

  This region is the economic heartland.

• コンピューターの心しん臓ぞう部ぶはCPUだ。

  The heart of a computer is the CPU.