Baptise

to immerse in water or sprinkle or pour water on in the Christian rite of baptism:
They baptized the new baby.
to cleanse spiritually; initiate or dedicate by purifying.
to give a name to at baptism; christen.
to administer baptism.
Contemporary Examples

The Archbishop of Canterbury, the Most Reverend Justin Welby, will baptise Prince George.
First Photograph of Prince George at Christening as Godparents Finally Named Tom Sykes October 22, 2013

Historical Examples

Don’t you know that the midwife can baptise in case of need?
Plays by August Strindberg, Fourth Series August Strindberg

“I baptise it,” he said with a smile, and then he sighed deeply.
The Music Master Charles Klein

And the last of the twenty-nine duties prescribed by the teacher: ‘baptise your children if you would be called a true Bishnoi.’
The Tribes and Castes of the Central Provinces of India R. V. Russell

Second, he was trusted and it was required at his hands, to baptise the Son of Man.
Jesus the Christ James Edward Talmage

To that one replies that everyone is perfectly free to baptise his infant as he pleases.
The Story of Alchemy and the Beginnings of Chemistry M. M. Pattison Muir

A little girl was born to Aga yesterday, and I was sent for to baptise it.
The World’s Greatest Books, Vol VII Various

He’s not going out in bluey specs with the sweat rolling off him to baptise blacks, is he?
Ulysses James Joyce

baptise your wonderful house yourself by filling it with happiness.
The Woman With The Fan Robert Hichens

Remove thy ban from my wife, and baptise her infant daughter, and I am content.
The Lancashire Witches William Harrison Ainsworth

verb
(Christianity) to immerse (a person) in water or sprinkle water on (a person) as part of the rite of baptism
(transitive) to give a name to; christen
(transitive) to cleanse; purify
v.

chiefly British English spelling of baptize; for spelling, see -ize. Related: Baptised; baptising.
v.

c.1300, from Old French batisier (11c.), from Latin baptizare, from Greek baptizein “to immerse, to dip in water,” also used figuratively, e.g. “to be over one’s head” (in debt, etc.), “to be soaked (in wine);” in Greek Christian usage, “baptize;” from baptein “to dip, steep, dye, color,” from PIE root *gwabh- “to dip, sink.” Christian baptism originally consisted in full immersion. Related: Baptized; baptizing.