動詞 bush:

1. provide with a bushing
   同義詞：bush

形容詞 bushed:

1. very tired
   同義詞：all in, beat, dead

bushed

adj.Informal （形容詞）【非正式用語】
Extremely tired; exhausted:
極度疲勞的；疲憊不堪的：
例句：
.I once stayed awake seven years on end. Not even a nap. Boy, was I bushed.(Martin Amis)
.我曾經(jīng)有七年完全沒有睡眠。甚至沒有打一個盹兒。孩子，我疲憊極了.(馬丁·埃米斯)

來源：
Possibly from Australian slang [lost in the bush]
可能源自 澳大利亞俚語 [不知所措]