(1) For crypto slang, see
buidling.
(2) (verb) To compile a program. See
build tool.
(2) (noun) A version of a program. A build number is assigned to newly compiled instances of a program under development. When published, a version number is typically assigned to the software, and the build number is hidden. Occasionally, software development tools retain their build number rather than replacing it with a version number. See
gold code,
build tool and
canary build.