Expressions (phrases, clauses, etc.), Noun
being engaged in two trades at the same time; wearing two hats; having two irons in the fire; two pairs of straw sandals
Idiomatic expressionoft. as 〜を履くsee 二足のわらじを履く
二足のわらじをはこうとして失敗した。He tried to play two roles at the same time and failed.
Also written 二足の草鞋【にそくのわらじ】、二束のわらじ【にそくのわらじ】