To make clear, bright, or luminous.
- To clarify, as by use of examples or comparisons: The editor illustrated the definition with an example sentence.
- To clarify by serving as an example or comparison: The example sentence illustrated the meaning of the word.
- To provide (a publication) with explanatory or decorative features: illustrated the book with colorful drawings.
- Obsolete To illuminate.
- To present a clarification, example, or explanation.