funnel (n.)
- approach
- asymptote
- bottleneck
- carry
- catheter
- center
- channel
- chimney
- close
- concentrate
- concentration
- concourse
- concurrence
- conduct
- cone
- confluence
- conflux
- congress
- conoid
- convergence
- converging
- cop
- cornet
- crossing
- drainpipe
- flue
- flume
- focalization
- focus
- hose
- hosepipe
- hub
- meet
- meeting
- nip
- nipple
- pinch
- pipe
- pipeline
- pipette
- piping
- radius
- reed
- siamese
- siphon
- smokestack
- snorkel
- stack
- standpipe
- stem
- stovepipe
- straw
- tangent
- tap
- taper
- trench
- tube
- tubing
- tubule
- unite
