1. to administer the Christian sacrament of baptism to (a person); to immerse in or sprinkle with water as a religious rite
Usage: British spelling; American English typically uses 'baptize'; religious/Christian context
2. to give a name or title to; to name formally
Usage: figurative or formal use
3. to initiate or introduce (someone) into a new experience or activity
Usage: figurative use

Examples

• The priest will baptise the infant next Sunday.
• They decided to baptise their daughter with the name Eleanor.
• The new ship was baptised with champagne before its maiden voyage.
• He was baptised into the church as a young child.
• The team baptised their new stadium with a victory.
• She was baptised in the river according to their religious tradition.