'Apple tree' in the Bible

SHEAs an apple-tree among the trees of the forest, So, is my beloved, among the sons: In his shade, I greatly delighted and sat down, And, his fruit, was sweet to my taste.

THEYWho is this, coming up out of the wilderness, leaning upon her beloved? HEUnder the apple-tree, I roused thee, where thy mother, was in pain with thee, where she was in pain who gave thee birth!