what is a keb?

A keb is a sheep whose lamb died. She might foster another lamb.

It is included on a website of vocabulary of Northumbrian farming terms

http://knol.google.com/k/clive-dalton/northumbrian-farming-glossary/2txpuk4gtju3n/9#

Other terms to get to know for sheep may include: lamb, ewe, ewe lamb, gimmer, shearling ewe, tup/ram, two shearling ewe, broken mouther ewe, yeld ewes, hoggie, wether lamb, tup lamb, tup hog, dinmont tup, shearing ram.