(In Nova Scotia) a family or community gathering at which cloth is milled, and singing and dancing take place (now only as a deliberately preserved tradition); a social event at which traditional songs from such a gathering are performed.
Origin
1930s.
Definition of milling frolic in US English:
milling frolic
noun
Canadian
(In Nova Scotia) a family or community gathering at which cloth is milled, and singing and dancing take place (now only as a deliberately preserved tradition); a social event at which traditional songs from such a gathering are performed.