ROGET THESAURUS
stave in
Concavity
VB
be concave, retire, cave in, render concave, depress, hollow, scoop, scoop out, gouge, gouge out, dig, delve, excavate, dent, dint, mine, sap, undermine, burrow, tunnel,
stave in.
Opening
VB
open, ope, gape, yawn, bilge, fly open, perforate, pierce, empierce, tap, bore, drill, mine, tunnel, transpierce, transfix, enfilade, impale, spike, spear, gore, spit, stab, pink, puncture, lance, stick, prick, riddle, punch,
stave in, cut a passage through, make way for, make room for, uncover, unclose, unrip, lay open, cut open, rip open, throw open, pop open, blow open, pry open, tear open, pull open.