अन्तर्वत्

अन्तर्वत्= अन्तर् + मतुप् = अम् + तुट् + अरन् + मतुप्
here inside push + “float coracle” as additive to mean action + here flow pull as additive to mean event of that action + “inside float foot” as additive to mean possessing
here inside push + float coracle + here water pull + inside float footing
having(Event of (action of (here inside push)))
= pregnant.
It can also refer to navigation of boat. In that sense नुक् “pull up maneuver” is to be inserted in the instruction.