Noun

2. The deepest part. (Usually of a body of water.)

   Tthe burning ship finally sunk into the depths.

3. A very remote part.

   Into the depths of the jungle...

   In the depths of the night,

4. The lowest point, all-time low, nadir.

   To plumb the depths of despair

   To stir someone to his depths.

5. The most severe part.

   in the depths of the crisis.

   in the depths of winter.

Usage notes

• As the meaning is superlative, it is almost always used with the definite article the