1.
main topic, main subject, real issue
The central or primary topic of a conversation, meeting, or presentation. Often used when transitioning from preliminary remarks or small talk to the actual matter at hand.
Usage
Almost always appears in the fixed phrases 本題に入る (to get to the main topic) and 本題に戻る (to get back to the main topic). A very useful expression for meetings, presentations, and formal conversations. Often marks the transition from 前置き (preamble) or 雑談 (small talk) to substantive discussion.
Common collocations
Related Words
Related:
前置き (preamble)