Noun
subcommand (plural subcommands)
(computing) A command that makes up part of a larger command.
This command accepts additional subcommands as parameters.
The show subcommand can be appended to to give detailed output on the configuration of a remote. Source: Internet
The subcommand has potential for data loss. Source: Internet
You also seen how to list the hosts available to Docker Machine using the subcommand. Source: Internet