well, now, (kokuji)
扨 is a Japanese-coined kanji (kokuji) used as a discourse marker meaning 'well' or 'now', often to shift topics or draw attention. Its meaning is functional rather than concrete.
扨 is a kokuji (Japanese-coined character) combining 扌 (hand) and 刃 (blade). The exact historical motivation is uncertain, but it likely uses the components phonetically or as a semantic compound for the discourse function.
Imagine a hand (扌) holding a blade (刃) to cut into a conversation, saying 'well' or 'now' to shift the topic.
For サ, picture a hand with a blade saying 'well, saw that coming!' — 'saw' cues サ.