armpit

American  

[ahrm-pit] / ˈɑrmˌpɪt /

noun

1. the hollow under the arm at the shoulder; axilla.

2. Slang. the worst possible place or area.

   Their car has broken down, stranding them in the armpit of California until it can be fixed.

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armpit British  

/ ˈɑːmˌpɪt /

noun

1. Technical name: axilla.  the small depression beneath the arm where it joins the shoulder

2. slang an extremely unpleasant place

   the armpit of the Mediterranean

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Etymology

Origin of armpit

First recorded in 1300–50; Middle English; arm ¹ + pit ¹ ( def. )

Example Sentences

“He lived in Bakersfield, which is the armpit of California,” Hankel says.

From The Wall Street Journal

In a typical scene, Miss Holland, played by Van der Velden with milkmaid braids and hairy armpits, chokes on the aerosol of a spray tan.

From The Wall Street Journal

Sometimes I just have time to wipe my armpits.

From The Wall Street Journal

The operation has also left Dawn in constant pain across her chest and under her armpit.

From BBC

In June, the woman first felt what she described as like a "pull" under her armpit.

From BBC