Strong's #2524: cham (pronounced khawm)
from the same as 2346; a father-in-law (as in affinity):--father in law.
Brown-Driver-Briggs Hebrew Lexicon:
châm
1) father-in-law, husband' s father
Part of Speech: noun masculine
Relation: from the same as H2346
Usage:
This word is used 4 times:
Genesis 38:13: "Tamar, saying, Behold thy father-in-law goeth up to Timnath to shear his sheep."
Genesis 38:25: "she sent her father-in-law, saying, By the man, whose these"
1 Samuel 4:19: "that the ark of God was taken, and that her father-in-law and her husband were dead, she bowed herself and travailed;"
1 Samuel 4:21: "the ark of God was taken, and because of her father-in-law and her husband."