headlock: a wrestling hold in which the opponent's head is locked between the crook of your elbow and the side of your body
lock: any wrestling hold in which some part of the opponent's body is twisted or pressured
fothergilla: any of several deciduous low-growing shrubs of the genus Fothergilla having showy brushlike spikes of white flowers in spring and fiery red and orange autumn color; grows from Alabama to the Allegheny Mountains