A local (St. Kilda) name for the guillemot.
1698. M. Martin, Voy. Kilda (1749), 7. Eighteen of the Eggs laid by the Fowl called by them Lavy. Ibid., 31. The Lavy, so calld by the Inhabitants of St. Kilda.
1766. Pennant, Zool. (1768), II. 410.
1802. G. Montagu, Ornith. Dict. (1833), 545.
1867. in Smyth, Sailors Word-bk.