(anatomy) A fibro-osseous passageway on the palmar side of the wrist that connects the distal forearm to the middle compartment of the deep plane of the palm.

plural of tunnel ram

A type of high-performance intake manifold designed to straighten the pathway of fuel/air mixture, speeding the flow to the combustion chambers.

A net that is wide at the mouth and narrow at the other end.

plural of tunnel net

(New York City, slang, derogatory) Of people who travel to Manhattan via bridge or tunnel from surrounding communities.

(slang, vulgar) Anus.

(finance, historical) The first (1970s) attempt at European monetary cooperation, essentially pegging all of the EEC currencies to one another.

(informal) A piercing in the earlobe which has been deliberately stretched to achieve a larger gauge. / (informal) A short, hollow, cylindrical piece of jewellery worn in such a piercing.

A tunnel linking two parallel main tunnels.