populate

Short definition from Wiktionary

Verb

1. 1
   To supply with inhabitants; to people.
2. 2
   To live in; to inhabit.
3. 3
   To increase in number; to breed.
4. 4
   To fill initially empty items in a collection.
5. 5
   To fill initially empty slots or sockets on a circuit board or similar.

Adjective

1. 1
   populous