escapement

n part of a clock or watch that regulates the movement （钟表的）擒纵器.

ersatz, erudite, eruditely, erudition, erupt, eruption, Erving Goffman, erysipelas, ESA, escalate, escalation, escalator, escalope, Escalopia, escapade, escape, escape clause (also get-out clause), escape velocity, escape-hatch, escapee, escapism, escapist, escapologist, escapology, escarole, escarpment, eschatology, eschew, escort, escritoire, escutcheon, Eskimo, ESL, ESN, esophagus, esoteric, esoterica, ESP, espadrille, espalier,