Also found in: Wikipedia.
give a sneck posset
archaic To give a rejection, refusal, or cold reception. Primarily heard in UK. Milton set to drinking in the town's tavern after his wealthy distant relations gave a sneck posset.
archaic A rejection, refusal, or cold reception; a closed door (as on a visitor). Primarily heard in UK. After receiving a veritable sneck posset from his wealthy distant relations, Milton set to drinking in the town's tavern for want of any other recourse.