Piṇḍika (—°) in chatta°-vivara is a little doubtful, the phrase probably means "a crevice in the covering (i.e. the round mass) of the canopy or sunshade" Ja VI 376. Dutoit (Ja translation VI 457) translates "opening at the back of the sunshade," thus evidently reading "piṭṭhika." [BD]: If this is an umbrella it is likely the openining at the top/center for the handle.