orifice Synonyms

opening porta rift slit slot space spiracle split stoma rent pyloric propylon pore perforation peephole passage outlet outfall os stomatous tuyere Holes jaws perianal preanal reactance openings pores passages embouchement narial vent yap nosepiece stomatal anoperineal anorectal blastoporal blastoporic fly trap nozzle muzzle cleft crack crevice debouchure delta dewlap diaphragm door