Following are all the orifice like words, in the list below.
OPENING
100% like orifice
VENT
66.92% like orifice
OUTLET
66.91% like orifice
APERTURE
66.88% like orifice
MOUTH
66.85% like orifice
DIAPHRAGM
66.83% like orifice
HOLE
66.77% like orifice
BORE
66.72% like orifice
NOZZLE
66.69% like orifice
DEFECT
66.66% like orifice
ENTRANCE
66.6% like orifice
INLET
66.58% like orifice
FITTING
66.58% like orifice
PORT
66.46% like orifice
SPLICE
66.43% like orifice
ANUS
33.57% like orifice
VALVE
33.57% like orifice
SPINNERET
33.57% like orifice
RECTUM
33.57% like orifice
CAVITY
33.57% like orifice
SPIRACLE
33.57% like orifice
PROTRUSION
33.57% like orifice
GLAND
33.57% like orifice
PENIAL
33.57% like orifice
FLANGE
33.57% like orifice
SLIT
33.57% like orifice
SPHINCTER
33.57% like orifice
PASSAGEWAY
33.57% like orifice
NARIAL
33.57% like orifice
APPENDAGE
33.57% like orifice
VENTURI
33.57% like orifice
MEATUS
33.57% like orifice
DUCT
33.57% like orifice
RESTRICTOR
33.57% like orifice
BLOWHOLE
33.57% like orifice
SPINNERETTE
33.57% like orifice
EVERSIBLE
33.57% like orifice
PAPILLA
33.57% like orifice
RECTAL
33.57% like orifice
SIPHONAL
33.57% like orifice
SLITLIKE
33.57% like orifice
SNOUT
33.57% like orifice
URETHRA
33.57% like orifice
OSTIUM
33.57% like orifice
REGURGITANT
33.57% like orifice
ANOSCOPE
33.57% like orifice
NOSTRIL
33.57% like orifice
PISTON
33.57% like orifice
PROBOSCIS
33.57% like orifice
TUBE
33.57% like orifice
GENITALIA
33.57% like orifice
EXCURRENT
33.57% like orifice
THROAT
33.57% like orifice
CARINAL
33.57% like orifice
NIPPLE
33.57% like orifice
DILATABLE
33.57% like orifice
CAPILLARY
33.57% like orifice
INTERSTICE
33.57% like orifice
SPIRACULAR
33.57% like orifice
PLUNGER
33.57% like orifice
AIRHOLE
33.57% like orifice
CATHETER
33.57% like orifice
UNLUBRICATED
33.57% like orifice
FORAMEN
33.57% like orifice
ANAL
33.57% like orifice
LACHRYMAL
33.57% like orifice
RECEPTACLE
33.57% like orifice
COMMISSURE
33.57% like orifice
APERTURES
33.57% like orifice
CLOACA
33.57% like orifice
CONICAL
33.57% like orifice
EVACUATOR
33.57% like orifice
CREVICE
33.57% like orifice
EDUCTOR
33.57% like orifice
APERTURAL
33.57% like orifice
TROCHAR
33.57% like orifice
OPERCULAR
33.57% like orifice
PHARYNX
33.57% like orifice
PROTUBERANCE
33.57% like orifice
EXCRETORY
33.57% like orifice
OVERTUBE
33.57% like orifice
HOSE
33.57% like orifice
DILATOR
33.57% like orifice
CLOACAL
33.57% like orifice
LABIAL
33.57% like orifice
PERFORATION
33.57% like orifice
VAGINAL
33.57% like orifice
FORAMINA
33.57% like orifice
MANDREL
33.57% like orifice
VARIX
33.57% like orifice
TUYERE
33.57% like orifice
VESICAL
33.57% like orifice
VENTURIS
33.57% like orifice
BUTTHOLE
33.57% like orifice
SPARGER
33.57% like orifice
CYLINDER
33.57% like orifice
OBTURATOR
33.57% like orifice
EXTRUSION
33.57% like orifice
CONSTRICTION
33.57% like orifice
NOZZLES
33.57% like orifice