骨こっ子し

noun

main point; gist; essentials; framework

Refers to the core structure or essential outline of a plan, argument, or document. Often used in formal or business settings.

• 提てい案あんの骨こっ子しを説せつ明めいしてください。

  Please explain the gist of the proposal.

• この計けい画かくの骨こっ子しはすでに決きまっている。

  The framework of this plan has already been decided.