noun, punctuation · perspiration or sweat secreted from the skin

他跑完步后出了一身汗。

verb · the fluid (perspiration) that is excreted through the pores of the skin.

他浑身都在淌汗。

noun · to be speechless out of helplessness or embarrassment (Internet slang used as an interjection)

看到这种离谱的新闻，我真是汗了。

noun, proper name · title for a Mongol or Turkic ruler (used in words like khagan or khanate)

成吉思汗是历史上著名的可汗。