a person authorized to act as representative for another; a deputy
a representative at a conference, etc.
an appointed representative in some legislative bodies
a type of variable storing a reference to a method with a particular signature, analogous to a function pointer
to authorize someone to be a delegate
to commit a task to someone, especially a subordinate
to give away authority over a subdomain; to allow someone else to create sub-subdomains of a subdomain of one’s own