aboideau
air lock
chute
dock gate
eaves trough
flood-hatch
floodgate
gate
guide
gutter
head gate
lock
lock gate
pentrough
shoot
sluice
sluice gate
tide gate
trough
water gate
weir
conduit
regulator
Venetian
blue water
bright-blue
earbud
economizer
f/stop
fishhook
focal-plane
green-painted
gunport
lead-coloured
paddle-boat
self-diagnostic
sun-blistered
third-level
trimensic
vulcanite
wall plate
weavers'
white-rimmed