Definition of installs:
(v) :
(transitive) To connect, set up or prepare something for use
(v) :
(transitive, computing) To transfer software onto a device's permanent storage and put it in a state where it is ready to be run when needed, usually decompressing it if necessary and performing any necessary pre-first-run configuration.
(n) :
(computing, informal) An installation: the process of installing a software application.
(n) :
(computing, informal) An installation: a software application that has been installed.
(v) :
(transitive) To admit formally into an office, rank or position.
(v) :
(transitive, sometimes reflexive) To establish or settle in.