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cyfelin [Welsh]

(Plural, cyfelinau. In an obsolete orthography, cyvelin, plural cyvelinau.)

In Wales, a unit of length = 1½ feet.¹ It belongs to the cubit family of units.

Owen’s Dictionary says it is also the name of a “welsh ell” of 2½ yards.²

1. Alfred Neobard Palmer.
Notes on ancient Welsh measures of land.
Archaeologia Cambrensis, vol. 13, no. 49 (January 1896).

2. William Owen.
A Dictionary of the Welsh Language explained in English, with numerous, …. Vol. I.
London: Printed for E. Williams, 11, Strand, 1803.