"Begirt" is the past participle of "begird," which combines "be-" (around, about) with "gird" (to encircle, bind), meaning to surround or encircle something. The term appears in poetry describing landscapes encircled by natural features, cities surrounded by walls, or waists bound by belts or sashes. Its literal sense of encircling extended to metaphorical uses—dangers that begirt travelers, cares that begirt minds. Poets valued its compact expression of surrounding or encompassing, which could convey protection (walls begirt a city) or threat (enemies begirt a position). The word's archaic quality suited epic and formal verse where geographic or military descriptions required elevated language. Its monosyllabic force and clear imagery made it effective for creating vivid pictures of enclosure, boundary, and containment in narrative and descriptive poetry.

Begirt appears primarily in epic and romantic poetry, particularly in descriptions of siege warfare, magical encirclement, or symbolic binding. Spenser uses it in "The Faerie Queene" for both literal armor-girding and metaphorical spiritual preparation. The term suggests completeness of encirclement, distinguishing it from partial surrounding. Often appears in passive constructions: "begirt with enemies" or "begirt by walls." Related to "gird" and "girt" but emphasizes the completed action. Valuable for analyzing military imagery, descriptions of fortification, or metaphors of constraint and protection. The prefix "be-" intensifies the action of girding, suggesting thoroughness. Note the distinction from "begird" (to gird about) though often used synonymously in archaic texts.