'Seax' is a word - any of lots of very sharp knives often used by dark age warriors to finish off downed enemies and a load of mundane things too, like cutting food to eat!
Interesting word, which I'd never heard of! My criteria for these quizzes is that the words be valid across all Scrabble dictionaries. This keeps the answers from being unreasonably obscure or archaic. Seax doesn't seem to be valid in any Scrabble dictionary.
Nah that's part of the fun, it's a really interesting arrangement of letters. (Also selfishly I was very satisfied when I caught on to the "oax" ending")
(TIME RUNS OUT)
". . . it was 'shadow'."