A branch office is a location of a business or organization that is separate from the main headquarters. The four crossword solutions for this term are NEST (4 letters), SATELLITE (9 letters), BIRDSNEST (9 letters), and TREEHOUSE (9 letters). NEST is a structure built by birds to house their eggs and young, while a SATELLITE is an artificial object sent into space to orbit the Earth. A BIRDSNEST is a NEST built by birds, and a TREEHOUSE is a structure built in a tree for recreational purposes. All of these terms can be used to describe a branch office, as they all refer to a separate location from the main headquarters.