The Hebrew noun dod means beloved, a term of endearment, or in some contexts 'uncle' (a beloved male relative). It is the key word used throughout the Song of Songs to describe the relationship between the beloved bride and her lover, and carries profound intimacy.
Dod appears over 30 times in the Song of Solomon as the primary term for the lover/beloved. The word radiates warmth, intimacy, and exclusive devotion. Beyond the Song of Songs, it is used poetically in other texts to describe God's delight in His people and the tender love between covenant partners.
Theologically, dod enriches the covenant metaphor of marriage between YHWH and Israel — a theme developed throughout the prophets. It points forward to Christ's love for the Church as His bride.