ˈ ̷ ̷ˌ ̷ ̷ noun
: a narrow walkway affording passage over or around areas not otherwise traversable or giving access to places otherwise inaccessible: as
a. : a raised gangway that runs the length of a tanker and gives passage forward and aft when the upper deck is awash
b. : a high narrow steel platform over the engine room or stokehold of a ship
c. : a narrow footway along the keel of a rigid airship
d. : a walkway along the roof of a railway freight car
e. : a narrow footway along a bridge