headstock

Meanings

1. A headframe.
2. A part of a machine (such as a lathe or drill) that contains the primary spindle.
3. A beam that supports a bell.
4. A clamp that restrains a cow by the neck.
5. The part of a lute-type string instrument, such as a guitar, that holds the tuning pegs or tensioning screws of the strings.
6. A transverse structural member at the extreme end of a rail vehicle's underframe, also used on some bogies.

Etymology

From head + stock.