'Tower' in the Bible

Your neck [is] like the tower of David, built in courses; a thousand {ornaments} are hung on it, all the shields of the warriors.

His cheeks [are] like beds of spice, a tower of fragrances; his lips [are] lilies dripping liquid myrrh.

Your neck [is] like a tower of ivory; your eyes [are] pools in Heshbon at the gate of Beth Rabbim. Your nose [is] like the tower of Lebanon {looking out over Damascus}.