Strong's #1790: dak (pronounced dak)
from an unused root (compare 1794); crushed, i.e. (fig.) injured:--afflicted, oppressed.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
dak
1) crushed, oppressed
Part of Speech: adjective
Relation: from an unused root (comp., H1794)
Usage:
This word is used 4 times:
Psalms 9:9: "The LORD also will be a refuge for the oppressed, a refuge in times of trouble."
Psalms 10:18: "To judge the fatherless and the oppressed, of the earth may no more"
Psalms 74:21: "O let not the oppressed return let the poor and needy praise thy name."
Proverbs 26:28: "A lying tongue hateth those that are afflicted by it; and a flattering mouth worketh ruin."