erhua variant of 勁|劲[jin4]

physical strength; power

elite soldiers; a crack force

(of wind) to blow strongly; (fig.) (of trends, changes etc) to sweep through society

power shot (e.g. in soccer)

not in good condition; wrong; fishy

bad; no good; below average; disappointing

to exert all one's strength

suitable; to one's liking; to get along together

to have no strength; to feel weak; exhausted; feeling listless; boring; of no interest