to state or set forth the meaning of (a word, phrase, etc.)

They disagreed on how to define liberal.

to explain or identify the nature or essential qualities of; describe

to define judicial functions.

to fix or lay down definitely; specify distinctly

to define one's responsibilities.

to determine or fix the boundaries or extent of

to define property with stakes.

to make clear the outline or form of

The roof was boldly defined against the sky.

to set forth the meaning of a word, phrase, etc.; construct a definition.