Rosslyn is a Scottish place name, often understood as "moor" or "promontory" plus "pool" or "waterfall."
Rosslyn is a name that weaves together the English rose tradition with the melodious Scottish suffix "-lyn," producing something that feels simultaneously botanical, lyrical, and deeply rooted in the British Isles. At its most literal, it reads as Rose + lyn, with Rose from the Latin rosa and lyn from the Celtic or Welsh element meaning "lake" or "pool" — giving the composite a quietly poetic meaning: rose-pool, or perhaps a pool as beautiful as a rose. It shares lineage with Rosalyn, Roslyn, and Rosaline, the latter immortalized by Shakespeare in both "Love's Labour's Lost" and as Romeo's first infatuation in "Romeo and Juliet."
The name gains a powerful geographic resonance through Rosslyn Chapel, the extraordinary fifteenth-century church near Edinburgh, Scotland, built by William Sinclair of the St. Clair family. The chapel's elaborately carved interior — featuring the famous Apprentice Pillar and Green Man carvings — generated centuries of legend about hidden Knights Templar treasures and Masonic secrets.
Dan Brown's 2003 novel "The Da Vinci Code" brought Rosslyn Chapel to worldwide attention, introducing millions to the name and the place simultaneously. The fictional climax set within the chapel's crypts turned Rosslyn into a name freighted with mystery and ancient knowledge. Apart from its fictional associations, Rosslyn carries a quiet dignity as a place-name-turned-given-name in the Scottish tradition.
Rosslyn, Virginia — a neighborhood of Arlington — carries the name into American geography as well. As a girl's name, it has been used modestly through the twentieth century, appealing to those with Scottish heritage or a fondness for names that feel both vintage and slightly unconventional.