Informant VI could not answer this question. Buckie is the general Scottish name for StE whelk (cf. SND). The answer slavery buckie is an allusion to the slimy nature of the whelk. Wulk was not only given by informant X but was applied several times to the periwinkle, a mollusc which looks similar to the whelk. Periwinkles are smaller than whelks, however.