What is the meaning of interpose?

verb

• Be or come between.
  • usage: "An interposing thicket blocked their way"
• Introduce.
  • usage: "God interposed death"
• To insert between other elements.
  • usage: "She interjected clever remarks"
  • synonyms: interject, come in, put in, throw in, inject
• Get involved, so as to alter or hinder an action, or through force or threat of force.
  • usage: "Why did the U. S. Not intervene earlier in WW II"
  • synonyms: intervene, step in, interfere