Concise Bible Dictionary:
Used typically for the source of nourishment. Israel “shall suck the breast of kings” (Isa. 60:16; compare Isa. 49:23; see also Job 24:9; Isa. 66:11).
Strong’s Dictionary of Hebrew Words:
Meaning:
or shod {shode}; probably from 7736 (in its original sense) contracted; the breast of a woman or animal (as bulging)
KJV Usage:
breast, pap, teat