[app. an error of some kind for triger, TRIGGER2, appearing first in 1659; whence in Phillips, New World of Words, 1678, and in many subsequent Dictionaries.
1659. Hoole, trans. Comenius’ Visible World, lxxxv. 175. He … stoppeth the wheel with a trigen [sufflamine] in a steep descent.
1678. Phillips (ed. 4), Trigen, a kind of Pole whereby a Coach or Waggon is stopped from going too fast down a Hill.
1688. R. Holme, Armoury, III. 339/2.
1847–78. Halliwell, Trigen, a skidpan for a wheel.]
