- to open (a locked door) by sliding a thin piece of celluloid or plastic between the door edge and doorframe to force open a spring lock.
- a thin piece of celluloid or plastic so used, as by a burglar.
Origin of loid
First recorded in 1955–60; shortening of celluloid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018