(nautical) A ship that transports oil (petroleum)

plural of tandem gait

(automotive) tanker (type of truck)

(medicine) A device for collecting exhaled air for analysis, similar to a Douglas bag.

(idiomatic) To digress from a topic.

plural of tangent space

(topology, differential topology) An n-dimensional vector space that represents the set of all vectors tangent to given n-dimensional differentiable manifold M at point x.

(aviation) An expendable external fuel tank on an aircraft.

(automotive) tanker (type of truck)

plural of tanker truck