The Collaborative International Dictionary
Monocline \Mon"o*cline\, n. (Geol.) A monoclinal fold.
Wiktionary
n. 1 (context geology English) A unidirectional dip in strata that is not a part of an anticline or syncline 2 (context geology English) A single flexure in otherwise flat-lying strata
WordNet
n. a geological formation in which all strata are inclined in the same direction
Wikipedia
A monocline (or, rarely, a monoform) is a step-like fold in rock strata consisting of a zone of steeper dip within an otherwise horizontal or gently-dipping sequence.
Usage examples of "monocline".
With the dawn they were climbing among shale and whinstone under the wall of a dark monocline where turrets stood like basalt prophets and they passed by the side of the road little wooden crosses propped in cairns of stone where travelers had met with death.