Definition of rollock:
(v) :
Alternative form of rollick. [To behave in a playful or carefree manner; to frolic or romp.]
(n) :
Alternative form of rowlock. [(nautical, chiefly British) A usually U-shaped pivot attached to the gunwale (outrigger in a sport boat) of a boat that supports and guides an oar, and provides a fulcrum for rowing; an oarlock.]