milk run

noun Slang.

a routine trip or undertaking, especially one presenting little danger or difficulty: The flight from New York to Chicago was a milk run for the experienced pilot and crew.

Origin of milk run

First recorded in 1940–45

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for milk run

milk run

noun

aeronautics informal a routine and uneventful flight, esp on a dangerous mission

Word Origin for milk run

C20: referring to the regular and safe routine of a milkman's round

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012