What is the meaning of immerse?

verb

• Thrust or throw into.
  • usage: "Immerse yourself in hot water"
  • synonyms: plunge
• Devote (oneself) fully to.
  • usage: "He immersed himself into his studies"
  • synonyms: steep, engulf, plunge, engross, absorb, soak up
• Enclose or envelop completely, as if by swallowing.
  • usage: "The huge waves swallowed the small boat and it sank shortly thereafter"
  • synonyms: swallow, swallow up, bury, eat up
• Cause to be immersed.
  • usage: "The professor plunged his students into the study of the Italian text"
  • synonyms: plunge