glen /ɡlɛn/ noun1 •A secluded and narrow valley, especially one with a river running through it; a depression between hills; a dale.In the glens of the hills about Strathsporran are many noble and nimble stags. But I have never set foot in my house there, for it is carpeted throughout with the tartan of my clan. — 1911 formsGlens · glens