obs. forms of CALKIN.
1572. Mascal, Govt. Cattle (1627), 157. Make the outside of the shooe alwayes with a caukin.
1617. Markham, Caval., VI. 61. If he be for the … draught, chiefly in paued streets, then, instead of thick spunges, deep caukens are more commodious.
1688. R. Holme, Armoury, III. 324/2. A Patten Shooe … hath both Caukins to secure sore Heels.
