Hollow pine eggcup to end of balustrade where nails are visible (4-3)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

definition: a peep-toe shoe would leave toenails visible edit to add wordplay, thanks to StuartW P-[in]-E E-[ggcu]-P, without inner letters/”Hollow”; plus TO (from surface) + end of [balustrad]-E