Strong's Definition
apparently from the same as 1730; the breast (as the seat of love, or from its shape)
KJV Usage: breast, teat
STEPBible — Tyndale Abridged Hebrew Lexicon
דַּד (dad) — breast. breast, nipple, teat
UBS Dictionary of Biblical Hebrew
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
[דַּד] n.m. breast, better teat, nipple base