Song of Songs 7:4
Thy neck is as a tower of ivory; thine eyes like the fishpools in Heshbon, by the gate of Bath–rabbim: thy nose is as the tower of Lebanon which looketh toward Damascus.
Cross-reference
In Song 4:1, the beloved's eyes are doves; here they are pools — both vivid similes in the same poetic sequence.
Song 4:4 compares the neck to the tower of David — a very similar tower image to the ivory tower here.
Song 4:8 also uses Lebanon as a poetic location for the beloved, echoing the same romantic imagery.
In Song 4:9, the beloved's eyes and necklace captivate; here the neck and eyes are similarly praised.
Song 5:15 compares the beloved's appearance to Lebanon, mirroring the simile of the tower of Lebanon here.
In Song 6:5, the beloved's eyes overwhelm; here they are likened to pools — both emphasize their power.
Song of Solomon 8:10 also uses tower imagery ('my breasts like towers') for the beloved — same poetic metaphor.
Song 1:10 also describes the neck, adorned with jewels, while here it is compared to an ivory tower.