Strong's #7699: shad (pronounced shad)
 or shod {shode}; probably from 7736 (in its original sense) contracted; the breast of a woman or animal (as bulging):--breast, pap, teat.
Brown-Driver-Briggs Hebrew Lexicon:
 ׁ / ׁ 
  shad / shôd 
 
 1) breast, bosom, (female) breast
 
 1a) breast (of woman)
 1b) breast (of animal)
 1c) breast (of both human and animal)
 
  Part of Speech: noun masculine
Relation: probably from H7736 (in its original sense) contracted
Usage:
This word is used 24 times:
Genesis 49:25: "blessings of the deep that lieth under, blessings  of the breasts, and of the womb:"
Job 3:12: "did the knees prevent me? or why  the breasts that I should suck?"
Job 24:9: "They pluck the fatherless  from the breast, and take a pledge of the poor."
Psalms 22:9: "me out of the womb: thou didst make me hope when I was upon my mother's  breasts."
Song of Solomon 1:13: "is my well-beloved unto me; he shall lie all night between  my breasts."
Song of Solomon 4:5: "Thy two  breasts are like two young roes that are twins, which feed among the lilies."
Song of Solomon 7:3: "Thy two  breasts are like two young roes that are twins."
Song of Solomon 7:7: "thy stature is like to a palm tree,  and thy breasts to clusters"
Song of Solomon 7:8: "I will take hold of the boughs thereof: now  also thy breasts shall be as clusters of the vine, and the smell"
Song of Solomon 8:1: "O that thou wast as my brother, that sucked  the breasts of my mother! when I should find thee without,"
Song of Solomon 8:8: "We have a little sister, and she hath no  breasts: what shall we do for our sister in the day"
Song of Solomon 8:10: "I am a wall,  and my breasts like towers: then was I in his eyes as one that found"
Isaiah 28:9: "them that are weaned from the milk, and drawn  from the breasts."
Isaiah 32:12: "They shall lament for  the teats, for the pleasant fields, for the fruitful"
Isaiah 60:16: "the milk of the Gentiles, and shalt suck  the breast of kings: and thou shalt know that I"
Isaiah 66:11: "That ye may suck, and be satisfied  with the breasts of her consolations; that ye may milk out,"
Lamentations 4:3: "Even the sea monsters draw out  the breast, they give suck to their young ones: the daughter of my people"
Ezekiel 16:7: "and thou art come to excellent ornaments:  thy breasts are fashioned, and thine hair is grown, whereas thou"
Ezekiel 23:3: "they committed whoredoms in their youth: there  were their breasts pressed, and there they bruised the teats"
Ezekiel 23:21: "thy teats by the Egyptians for  the paps of thy youth."
Ezekiel 23:34: "and thou shalt break the shards thereof, and pluck off  thine own breasts: for I have spoken it, saith"
Hosea 2:2: "out of her sight, and her adulteries from between  her breasts;"
Hosea 9:14: "them a miscarrying womb and dry  breasts."
Joel 2:16: "gather the children, and those that suck  the breasts: let the bridegroom go forth of his chamber,"