Meaning

• A solemn pledge or promise, appealing to a deity, a ruler, or another entity (not necessarily present) to attest to the truth of a statement or sincerity of one's desire to fulfill a contract or promise.

• A statement or promise which is strengthened (affirmed) by such a pledge.

  "After taking the oath of office, she became the country's forty-third premier."

• A light, irreverent or insulting appeal to a deity or other entity.

• A curse, a curse word.

Meaning

• To pledge.