Narwhal's tusk (5)
I believe the answer is:
tooth
(Other definitions for tooth that I've seen before include "Let it stand" , "It erupts" , "1 across" , "Jag on the edge of a saw" , "One needed to chew" .)
I believe the answer is:
tooth
(Other definitions for tooth that I've seen before include "Let it stand" , "It erupts" , "1 across" , "Jag on the edge of a saw" , "One needed to chew" .)