teg
Concise Oxford English Dictionary © 2008 Oxford University Press:
teg/tɛɡ/
▶noun a sheep in its second year.
– origin C16 (as a contemptuous term for a woman; later applied specifically to a ewe in her second year): perh. rel. to Swed. tacka ‘ewe’.
'teg' also found in these Oxford entries:

