couloir
UK[ˈkuːlwɑː]US[kʊˈlwɑːr]
n
a steep, narrow gully on a mountainside, especially one filled with snow or ice.
n
a corridor or passageway.
Etymology
the word 'couloir' entered english in the early 19th century from modern french, where it means 'corridor' or 'passage'. the french term itself derives from the old french 'coloir', meaning 'to flow' or 'to strain', which in turn originates from the latin verb 'colare', meaning 'to filter' or 'to strain'. the semantic evolution from the concept of filtering or flowing to a mountain gully is a vivid metaphorical shift, picturing the gully as a channel or passage through which snow, ice, or debris flows down the mountainside, much like a liquid being strained. this specialized mountaineering term retains its french pronunciation and spelling, encapsulating its journey from a general latin action to a specific geographical feature in the alpine lexicon.
Analysis
this word is a direct loanword from french. it is not productively formed from smaller english morphemes and is therefore treated as a simplex unit for the purpose of this analysis.
Examples
the climbers carefully ascended the icy couloir to reach the summit ridge.
a rockfall had cleared the couloir of most of its snow, making the ascent more technical.
from the valley, the prominent couloir looked like a white scar on the mountain's face.