Explainer and Explain

verb

• Make plain and comprehensible.
  • usage: "He explained the laws of physics to his students"
  • synonyms: explicate
• Define.
  • usage: "The committee explained their plan for fund-raising to the Dean"
• Serve as a reason or cause or justification of.
  • usage: "Your need to sleep late does not excuse your late arrival at work"; "Her recent divorce may explain her reluctance to date again"
  • synonyms: excuse

• (a.) To flatten; to spread out; to unfold; to expand.
• (v.i.) To give an explanation.
• (a.) To make plain, manifest or intelligible; to clear of obscurity; to expound; to unfold and illustrate the meaning of; as, to explain a chapter of the Bible.