DCHP-1 Online
twitch-up † 
n. a kind of set (def. 1) that consists of a resilient sapling having a snare or trap attached to the top and being bent over so that when the trap is sprung, the caught animal is hoisted in the air.
See also: set (def. 1) spring-pole
- 1923 (1924) "I knocked this fellow [an animal] over with a club. I had better luck there than I did with my twitch-ups. I set out three last night, in their runs beyond the second muskeg. But my root-fibre wasn't strong enough. It was broken in both loops that were sprung."
- 1924 The bait stick and horizontal stick were then adjusted . . . and the twitch-up was complete.
- 1923 (1924) "I knocked this fellow [an animal] over with a club. I had better luck there than I did with my twitch-ups. I set out three last night, in their runs beyond the second muskeg. But my root-fibre wasn't strong enough. It was broken in both loops that were sprung."