expression

noun

• The action of expressing thoughts, ideas, feelings, etc.
• A particular way of phrasing an idea.
• A colloquialism or idiom.

  "The expression "break a leg!" should not be taken literally."

• A facial appearance usually associated with an emotion.

  "Her expression changed from joy to misery after realising her winning lottery ticket had expired."

• An arrangement of symbols denoting values, operations performed on them, and grouping symbols.
• The process of translating a gene into a protein.
• A piece of code in a high-level language that returns a value.
• A specific blend of whisky.
• The act of pressing or squeezing out.

  "expression from a gland"

• The tone of voice or sound in music.