| admission(noun, progress, line, connection, approach) |
| porch(noun, beginning, opening, edge, entry) |
| admittance(noun, progress, line, connection, approach) |
| border(noun, beginning, borderline, boundary, frontier) |
| egress(noun, building, entrance) |
| hatchway(noun, opening, building, entrance) |
| outlet(noun, breach, hole, gap, egress) |
| postern(noun, beginning, opening, building, entrance) |
| room access(noun, expression, idiom) |
| vent(noun, breach, hole, gap, egress) |
| bulkhead |
| gap(noun, opening, breach, hole) |
| orifice(noun, beginning, opening, breach, box) |
| pore(noun, opening, egress) |
| port(noun, bar, opening, entrance, entry) |
| pylon |
| wicket(noun, beginning, opening) |
| scuttle(breach, hole, gap) |
| brink |
| chops(noun, beginning) |