n 1. postal mail. "Snail mail" gets its name because it is slower than e-mail, and snails are slow creatures. ("I sent you the package via snail mail.") Submitted by Kevin Henriksen, Cedar Rapids, IA, USA, 29-11-2001.
SNAIL MAIL
Meaning of SNAIL MAIL in English
Slang English vocab. Английский сленговый словарь. 2012