内切

(math.) to inscribe / internally tangent

inside / inner / internal / within / interior

to cut / to slice / tangent (math)

definitely / absolutely (not) / (scoffing or dismissive interjection) Yeah, right. / Tut! / to grind / close to / eager / to correspond to / see also 反切[fan3 qie4]

inside cut (golf) / (math.) inscribed sphere / insphere