Achor

Achor - meaning trouble in Hebrew, is the name of a valley in the vicinity of Jericho. Eusebius (in Onomasticon) and Jerome (in Book of Sites and Names of Hebrew Places) implied that they thought it was a valley north of Jericho, but in modern times the valley is often considered to be the wadi el-Kelt, a deep ravine located to Jericho's south.
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[Other] Said by Pliny to be a deity invoked by the Cyreneans for averting insect pests.

N M
scab/scald (on the head)

trouble
  

trouble, a valley near Jericho, so called in consequence of the trouble which the sin of Achan caused Israel (Josh. 7:24,26). The expression "valley of Achor" probably became proverbial for that which caused trouble, and when Isaiah (Isa. 65:10) refers to it he uses it in this sense: "The valley of Achor, a place for herds to lie down in;" i.e., that which had been a source of calamity would become a source of blessing. Hosea also (Hos. 2:15) uses the expression in the same sense: "The valley of Achor for a door of hope;" i.e., trouble would be turned into joy, despair into hope. This valley has been identified with the Wady Kelt.