trig
n. US //ˈtɹɪɡ// UK //tɹˈɪɡ// trig Dialect Informal
From Middle English trig, tryg, from Old Norse tryggr (“loyal, faithful, true”), from Proto-Germanic *triwwiz (“loyal, faithful, true”). Cognate with Old English trīewe (“faithful, loyal, true”). More at true.
Clipping of trigonometry.
See trigger.
Compare Danish trykke (“to press”).
Clipping.