Pneumatic tube

(redirected from Pneumatic mail)
Also found in: Medical.
Related to Pneumatic mail: Pneumatic dispatch
See Pneumatic dispatch, above.

See also: Pneumatic

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
One of the heparin-plasma samples was sent to the laboratory by pneumatic mail (a distance of ~100 m); the other sample was carried by hand.