ROGET'S THESAURUS OF ENGLISH WORDS AND PHRASES ...

outlet, inlet; vent, vomitory; embouchure; orifice, mouth, sucker, muzzle, throat,
gullet, weasand † , wizen, nozzle; placket.
portal, porch, gate, ostiary † , postern, wicket, trapdoor, hatch, door; arcade; cellarway † ,
driveway, gateway, doorway, hatchway, gangway; lich gate † .
way, path &c 627; thoroughfare; channel; passage, passageway; tube, pipe; water pipe
&c 350; air pipe &c 351; vessel, tubule, canal, gut, fistula; adjutage † , ajutage † ; ostium † ;
smokestack; chimney, flue, tap, funnel, gully, tunnel, main; mine, pit, adit † , shaft; gallery.
alley, aisle, glade, vista.
bore, caliber; pore; blind orifice; fulgurite † , thundertube † .
porousness, porosity.
sieve, cullender † , colander; cribble † , riddle, screen; honeycomb.
apertion † , perforation; piercing &c v.; terebration † , empalement † , pertusion † , puncture,
acupuncture, penetration.
key &c 631, opener, master key, password, combination, passe-partout.
V. open, ope † , gape, yawn, bilge; fly open.
perforate, pierce, empierce † , tap, bore, drill; mine &c (scoop out) 252; 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.
Adj. open; perforated &c v.; perforate; wide open, ajar, unclosed, unstopped; oscitant † ,
gaping, yawning; patent.
tubular, cannular † , fistulous; pervious, permeable; foraminous † ; vesicular, vasicular † ;
porous, follicular, cribriform † , honeycombed, infundibular † , riddled; tubulous † ,
tubulated † ; piped, tubate † .
opening &c v.; aperient † .
Int. open sesame!,
261. Closure -- N. closure, occlusion, blockade; shutting up &c v.; obstruction &c
(hindrance) 706; embolus; contraction &c 195; infarction; constipation, obstipation † ;
blind alley, blind corner; keddah † ; cul-de-sac, caecum; imperforation † , imperviousness
&c adj.; impermeability; stopper &c 263.
V. close, occlude, plug; block up, stop up, fill up, bung up, cork up, button up, stuff up,
shut up, dam up; blockade, obstruct &c (hinder) 706; bar, bolt, stop, seal, plumb; choke,
throttle; ram down, dam, cram; trap, clinch; put to the door, shut the door.
Adj. closed &c v.; shut, operculated † ; unopened.
unpierced † , imporous † , caecal [Med.]; closable; imperforate, impervious,
impermeable; impenetrable; impassable, unpassable † ; invious † ; pathless, wayless † ;
untrodden, untrod.
unventilated; air tight, water tight; hermetically sealed; tight, snug.
262. Perforator -- N. perforator, piercer, borer, auger, chisel, gimlet, stylet † , drill,
wimble † , awl, bradawl, scoop, terrier, corkscrew, dibble, trocar [Med.], trepan, probe,
bodkin, needle, stiletto, rimer, warder, lancet; punch, puncheon; spikebit † , gouge; spear
&c (weapon) 727; puncher; punching machine, punching press; punch pliers.