• (British) IPA: /ˈtɹʌntʃən/

truncheon (plural truncheons)

1. (obsolete) A fragment or piece broken off from something, especially a broken-off piece of a spear or lance.
   • 1596, Edmund Spenser, The Faerie Queene, IV.3:

     Therewith asunder in the midst it brast, / And in his hand nought but the troncheon left […].

2. (obsolete) The shaft of a spear.
3. A short staff, a club; a cudgel.

   • With his truncheon he so rudely struck.

4. A baton, or military staff of command, now especially the stick carried by a police officer.
   • 1604, William Shakespeare, Measure for Measure, Act II, Scene II, l.60:

     Not the king's crown, nor the deputed sword / The marshal's truncheon, nor the judge's robe / Become them with one half so good a grace / As mercy does.

5. (obsolete) A stout stem, as of a tree, with the branches lopped off, to produce rapid growth.
6. (euphemistic) A penis.
   • 1749, [John Cleland], “(Please specify the letter or volume)”, in Memoirs of a Woman of Pleasure [Fanny Hill], London: Printed [by Thomas Parker] for G. Fenton [i.e., Fenton and Ralph Griffiths] […], OCLC 731622352 ↗:

     Then, being on his knees between my legs, he drew up his shirt and bared all his hairy thighs, and stiff staring truncheon, red-topt and rooted into a thicket of curls

• French: matraque
• Portuguese: cassetete
• Russian: дубинка
• Spanish: porra

• German: Schlagstock
• Russian: резиновый
• Spanish: porra

truncheon (truncheons, present participle truncheoning; past and past participle truncheoned)

1. (transitive) To strike with a truncheon.