(computing) A device file, present in Unix and Unix-like operating systems, that discards all data written to it and yields no output.

Short for web development.

Alternative form of /dev/null

(historical) Systematic collection of non-Muslim boys or young men from rural Christian populations of the Balkans, practiced by Ottomans; the boys were taken to Istanbul, converted to Islam and educated for military profession or religious disciplines.

(software engineering) An augmentation of the DevOps approach that allows for the integration of security practices.