'Clusters' in the Bible

and in the vine are three branches, and it is as it were flourishing; gone up hath its blossom, its clusters have ripened grapes;

For of the vine of Sodom their vine is, And of the fields of Gomorrah; Their grapes are grapes of gall -- They have bitter clusters;

This thy stature hath been like to a palm, And thy breasts to clusters.

I said, 'Let me go up on the palm, Let me lay hold on its boughs, Yea, let thy breasts be, I pray thee, as clusters of the vine, And the fragrance of thy face as citrons,