جأجُؤْجُؤٌ The breast (صَدْر, Zj in his “ Khalk el-Insán,” S, K, TA) of a human being, (TA,) and of a bird, and (tropical:)  of a ship: (S, TA:) or the sternum, or breast-bone: or the middle of the breast: or the part where the heads of the bones of the breast come together; as in the Nh and M: (TA:) pl. جَآجِئُ. (S, K.) An Arab is related to have said, مَا أَطْيَبَ جُوذَابَ الأَرُزِّ بِجَآجِئِ الإِوَزِّ [How delicious is جوذاب of rice (i. e. rice prepared with sugar and flesh-meat) with the breasts of geese!]. (TA.) And you say, شَقَّتِ السَّفِينَةُ بِجُؤْجُؤِهَا (tropical:)  [The ship clave the water with her breast]. (TA.)