alcove
axis
axle
axle bar
axle shaft
axle spindle
axle-tree
belvedere
bower
casino
conservatory
distaff
fulcrum
gazebo
gimbal
glasshouse
greenhouse
gudgeon
hinge
hingle
hub
kiosk
lathhouse
mandrel
nave
oarlock
pandal
pergola
pin
pintle
pivot
pole
radiant
retreat
rowlock
spindle
summerhouse
swivel
trunnion
rotating shaft
shaft
tree
arbour
archway
portico
trellis
Barber
barber
barbre
harbor
harbour