Clue 14 Shellbacks� work on shell backs started from scratch. (9)
Shellbacks is one of the names given to sailors that cross the Equator .... work on shell backs i.e backs of shells or more usually whale teeth, walrus tusk etc ..... the scratch is akin to drawing or etching ..... so, a 9 letter word for
1. a carved or engraved article, esp. of whale ivory, whalebone, walrus tusks, or the like, made by whalers as a leisure occupation.
2. such articles or work collectively.
3. the art or technique of carving or engraving whale ivory, whalebone, walrus tusks, etc.