This paper examines the semiotic function of silence in modern poetic discourse, challenging traditional interpretations of silence as mere absence or void. By integrating semiotic theory, deconstructionist philosophy, and literary analysis, we argue that silence operates as a potent signifier that generates meaning through its deliberate interaction with speech. Drawing on frameworks established by Peirce, Derrida, and Eco, we analyze how poetic devices such as pauses, blank spaces, ellipses, and omissions function as complex signs that communicate what words cannot express. Through case studies of T.S. Eliot, Sylvia Plath, and A.K. Ramanujan, we demonstrate how silence conveys psychological depth, cultural trauma, and metaphysical inquiry. The paper concludes that silence constitutes a fundamental dimension of poetic discourse that transforms absence into meaningful presence, inviting readers to become active participants in the construction of meaning.