What is the meaning of Frown?

A wrinkling of the forehead with the eyebrows brought together, typically indicating displeasure, severity, or concentration.

A downturn of the corners of the mouth, typically expressing sadness.

To have a frown on one's face.

To manifest displeasure or disapprobation; to look with disfavour or threateningly.

To repress or repel by expressing displeasure or disapproval; to rebuke with a look.

To communicate by frowning.

Soft mutation of brown.

Source: wiktionary.org