inlet (n.)
- access
- adit
- aisle
- alley
- ambulatory
- aperture
- approach
- arcade
- arm
- artery
- avenue
- bay
- bayou
- bight
- cavity
- channel
- chasm
- check
- clearing
- cleft
- cloister
- colonnade
- communication
- conduit
- connection
- corridor
- cove
- crack
- creek
- defile
- disclosure
- entrance
- entranceway
- entry
- entryway
- exit
- fenestra
- ferry
- fistula
- fontanel
- foramen
- ford
- gallery
- gangplank
- gangway
- gap
- gape
- gat
- gulf
- hall
- harbor
- hiatus
- hole
- hollow
- in
- ingress
- intake
- interchange
- intersection
- interval
- junction
- lacuna
- lane
- leak
- loch
- lough
- opening
- orifice
- outlet
- overpass
- pass
- passage
- passageway
- pore
- portico
- slot
- slough
- space
- split
- stoma
- tunnel
- underpass
- vestibule
- way
- yawn