The term 'branch headquarters' can be represented by a variety of crossword solutions, including 'TRUNK' (5 letters), 'NEST' (4 letters), 'AERIE' (5 letters), 'nests' (5 letters), 'tree' (4 letters), 'TREES' (5 letters), 'treetop' (7 letters), and 'treehouse' (9 letters). A TRUNK is the main stem of a tree, while a NEST is a structure built by birds or other animals for shelter. An AERIE is a large NEST built high up in a tree or on a cliff. TREES are tall plants with woody stems, and treetops are the highest parts of TREES. Finally, a treehouse is a structure built in the branches of a tree. All of these words can be used to describe a branch headquarters, which is a place where a branch of an organization is managed.