How to use man lock in a sentence
I saw the man lock the gate again, and he looked round him like a man afraid of being spied upon.The Mystery of Lincoln's Inn | Robert Machray
Side by side, on the level of the lower or working platform of the tunnel, were the man lock and the muck lock.
British Dictionary definitions for man lock
civil engineering an airlock that allows workmen to pass in and out of spaces with differing air pressures, esp one providing access to and from a tunnel, shaft, or caisson in which the air is compressed
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