knobstick

from Wiktionary, Creative Commons Attribution/Share-Alike License

• n. A stick with a rounded knob at the end.
• n. One who refuses to join, or withdraws from, a trade union.

from the GNU version of the Collaborative International Dictionary of English

• n. One who refuses to join, or withdraws from, a trade union.
• n. A stick, cane, or club terminating in a knob; esp., such a stick or club used as a weapon or missile; a knobkerrie.

from The Century Dictionary and Cyclopedia

• n. A heavy stick or cane with a knob.
• n. In England, a workman who refuses to join a trades-union or retires from it, and who works when the members of the union are on strike. Also knob, nob, blacknob, and blackleg. Equivalent to scab in the United States.
• n. Also spelled nobstick.