I maybe chancing my arm with this one but I did check out that it is in my dictionary (Oxford English)
The definition is: A large hairy manlike creature said to live in the highest part of the Himalayas
YETI
leaves ETI for the next player
PS Stephen probably has a larger vocabulary than I do but is slightly dyslexic. It always frustrates him that,in his opinion, you have to practically know how a word is spelt before you can look it up in a dictionary:-) He's got a point I suppose