(of river erosion) cutting backwards or upstream above the original source, which recedes
a variant of headwards
/ˈhɛdwədz/ adverb 1. backwards beyond the original source: a river erodes headwards
[hed-waw-terz, -wot-erz] /ˈhɛdˌwɔ tərz, -ˌwɒt ərz/ plural noun 1. Sometimes, headwater. the upper tributaries of a river. /ˈhɛdˌwɔːtəz/ plural noun 1. the tributary streams of a river in the area in which it rises; headstreams n. 1530s; see head (n.) + water (n.).
[hed-wey] /ˈhɛdˌweɪ/ noun 1. forward movement; progress in a forward direction: The ship’s headway was slowed by the storm. 2. progress in general: headway in a career. 3. rate of progress: a slight headway against concerted opposition. 4. the time interval or distance between two vehicles, as automobiles, ships, or railroad or subway cars, traveling […]
[hed-wair] /ˈhɛdˌwɛər/ noun 1. coverings for the head, especially hats.