Sharkû is Orkish meaning "old man". In the more familiar form "Sharkey" it was used by the Orcs and Men of Isengard to refer to their leader, the Wizard Saruman.
Although it is not certain, Sharkû might be derived from the Mannish root ZAR. The ending could be identified with the ending seen in Tharkûn.
- ↑ Lalaith's Middle-earth Science, "Etymologies of the Atani Languages" (accessed 11 October 2010)