A skein is a unit of length which has been used in the UK.[1]
As a measuring unit of cotton yarn or of silk, a skein equates to a "rap" or a "lea".[2] One skein is equivalent to 360 feet (109.73 m).[3]
References
^Cardarelli, François (2003). Encyclopaedia of Scientific Units, Weights and Measures. London: Springer. p. 29. ISBN978-1-4471-1122-1.