Etymology

ochdamh

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Today it means: An obsolete Scots unit equal to ¹⁄₈ daugh, notionally comprising 50 Scottish acres. Full definition →

Scottish Gaelic ochdamh ← Old Irish ochtmad ← Proto-Celtic *oxtūmetos
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The story

  1. Proto-Celtic · derived from*oxtūmetos
  2. Old Irish · derived fromochtmad
  3. Scottish Gaelic · derived fromochdamh“eighth”
  4. English todayochdamh

Borrowed from Scottish Gaelic ochdamh (“eighth”), from Old Irish ochtmad, from Proto-Celtic *oxtūmetos.

Etymology from Wiktionary, CC BY-SA 4.0.