attaché case 
noun
A small, flat, rigid, rectangular case used for carrying documents.In the early morning of April 29, 2002, a man in a white polo shirt carrying an attaché case came out of a two-floor apartment in a middle-class subdivision in Antipolo....
- Dressed in a dark business suit and carrying a black attaché case, he might have passed for an attorney returning from a late lunch.
- On the evening of December 4, he was stopped by demonstrators as he was leaving an office building in East Berlin carrying an attaché case.
- it's a free country
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- it's a long story
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- itself
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- it's not on
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- it's no use crying over spilt (or spilled) milk
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- itsy-bitsy
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- itty-bitty
- ITU
- ITV
- it won't do
- -ity
- IU