D defs.my
Entry 4 senses Webster, 1913

Trier

/trī'-ẽr/ · Tri·er · IPA /ˈtɹaɪə(ɹ)/
01 n. One who tries; one who makes experiments; one who examines anything by a test or standard.
  1. 1.
    One who tries; one who makes experiments; one who examines anything by a test or standard.
  2. 2.
    One who tries judicially.
  3. 3.
    A person appointed according to law to try challenges of jurors; a trior.(Law)
  4. 4.
    That which tries or approves; a test.