Strong's #3628: oiktirmos (pronounced oyk-tir-mos')
 from 3627; pity:--mercy.
Thayer's Greek Lexicon:
 ̓́ 
 
  oiktirmos 
 
 1) compassion, pity, mercy
 
 1a) bowels in which compassion resides, a heart of compassion
 1b) emotions, longings, manifestations of pity
 
  Part of Speech: noun masculine
Relation: from G3627
  Citing in TDNT: 5:159, 680
 
Usage:
This word is used 5 times:
Romans 12:1: "brethren, by the  mercies of God, that ye present your bodies"
2 Corinthians 1:3: "Christ, the Father  of mercies, and the God of all comfort;"
Philippians 2:1: "of the Spirit, if any bowels and  mercies,"
Colossians 3:12: "and beloved, bowels  of mercies, kindness, humbleness of mind, meekness, longsuffering;"
Hebrews 10:28: "law died without  mercy under two or three"