n. The act of fitting together parts of machines and instruments, such as sewing-machines, guns, microscopes, watches, etc., especially when duplicate parts are so exactly made as to be interchangeable.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the act of gathering something together
Word Usage
"This is standard operating procedure for attackers, called botmasters, who specialize in assembling and deploying huge armies of botted PCs to distribute spam, steal data, conduct denial of service attacks and hijack online financial accounts."