1. to call upon or appeal to (a higher power, authority, or principle) for help, support, or inspiration
2. to cite or refer to (a law, rule, or precedent) as justification for an action
3. to bring about or cause (a feeling, memory, or image) to appear

Examples

• The speaker invokes the memory of past heroes to inspire the audience.
• The lawyer invokes the Fifth Amendment to protect her client.
• The smell of cookies invokes childhood memories of my grandmother's kitchen.
• The defendant invokes his right to remain silent.
• The poem invokes images of a peaceful countryside.
• The witch invokes ancient spirits in her ritual.
• The president invokes emergency powers during the crisis.