Accessed 30 sep. Many place-names in scotland with glen derive from the gaelic gleann (deep valley), with some being from the cognates in the brittonic languages cumbric and pictish or from the gaelic … Collins cobuild advanced learner’s dictionary. Sea eagle chicks will soon be soaring over the glens. Definition of glen noun in oxford advanced learners dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. A deep, narrow valley, especially among mountains: See examples of glen used in a sentence. Glen, n. ¹ meanings, etymology, pronunciation and more in the oxford english dictionary · glen (plural glens) a secluded and narrow valley, especially one with a river running through it; Glen (ɡlɛn) n (physical geography) a narrow and deep mountain valley, esp in scotland or ireland [c15: From scottish gaelic gleann, from old irish glend] · glenn is typically a given name, while glen refers to a narrow valley, especially in mountainous or wooded areas. A depression between hills; A small, narrow, secluded valley. A glen is a deep, narrow valley, especially in the mountains of scotland or ireland. A deep, narrow valley, especially among….