Pur-lamb

According to the Old English Dictionary:

es;

pur-lamb

n. A pur-lamb (pur-lamb a wether-lamb, West of England, E. D. S. Publ. Old Farming Words, No. 6) :-- Ðæt lamb sceal beón ánwintre purlamb clǽne and unwemme erit agnus absque macula, masculus, anniculus, Ex. 12, 5. pur-lamb