(also gul·ley ) / ˈgʌli; NAmE / noun ( pl. gul·lies , gul·leys )
1.
a small, narrow channel, usually formed by a stream or by rain
2.
a deep ditch
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WORD ORIGIN
mid 16th cent. (in the sense gullet ): from French goulet , diminutive of goule throat, from Latin gula .