Headward

"The highest, flattest, and smoothest part of Tibet (3 ) is the central, Oligo-Miocene plateau, mature but still sheltered, especially in the west, from headward erosion."

"When lift is applied, forces are experienced which appear to the pilot as being applied from a headward direction, i.e., from head to toe."

"As the isthmus disappeared at the close of the 17th century, the river continued to erode the island headward and build it up at its downstream end, so that the western and southern shores where the first settlement had been built, were partly destroyed."