Strong's #976: bochan (pronounced bo'-khan)
from 974; trial:--tried.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
bôchan
1) testing, tested, tried
Part of Speech: noun masculine (used as an adjective)
Relation: from H974
Usage:
This word is used 1 times:
Isaiah 28:16: "in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure"