7 letters · 15 points in Scrabble
noun a close observer; someone who looks at something (such as an exhibition of some kind)
noun a guard who keeps watch
noun a person who keeps a devotional vigil by a sick bed or by a dead body
originFrom Middle English wacchere, wachere, wacher, equivalent to watch + -er.
Etymology from Wiktionary, CC BY-SA 3.0