n.

1. an administrative division of some larger or more complex organization;
   subdivision, arm
   
   • a branch of Congress
2. a division of a stem, or secondary stem arising from the main stem of a plant
3. a part of a forked or branching shape;
   leg, ramification
   
   • he broke off one of the branches
4. a natural consequence of development;
   outgrowth, offshoot, offset
5. a stream or river connected to a larger one
6. any projection that is thought to resemble a human arm;
   arm, limb
   
   • the arm of the record player
   • an arm of the sea
   • a branch of the sewer

v.

1. grow and send out branches or branch-like structures;
   ramify
   
   • these plants ramify early and get to be very large
2. divide into two or more branches so as to form a fork;
   ramify, fork, furcate, separate
   
   • The road forks