buncher

Short definition from Wiktionary

Noun

1. 1
   A person who bunches.
2. 2
   Something that bunches or causes to bunch: A machine that twists strands together during the manufacture of metal wire; a strander.
3. 3
   Something that bunches or causes to bunch: A circuit that causes electrons or other charged particles in a particle beam to group together.
4. 4
   An illegitimate supplier of laboratory animals who obtains the animals by kidnapping pets or illegally trapping strays.
5. 5
   A ground-based radio transmitter, configured within a system to guide aircraft to their allocated airfields.