[duhb-uh l-lok]

verb (used with object)

to lock with two turns of a key, so that a second bolt is engaged.
to fasten with particular care.

Origin of double-lock

First recorded in 1585–95 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for double-lock

Historical Examples of double-lock

  • Then he left the closet, taking care to double-lock the door.

    The Exploits of Juve

    Pierre Souvestre and Marcel Allain

  • And with that she blew him a kiss from the threshold of her bedroom, and Rudolf heard her double-lock the door behind her.

  • You will be at liberty to double-lock my study door; you can go to sleep without the slightest fear.

  • The single-lock and double-lock bridges with two and three spans of 15 ft., respectively, are the ones of most utility.

  • I got up, with a shiver, to shut and double-lock it; then I made for the alcove, and went to bed in haste.