New sharp threshing instrument having teeth

I think you might be referring to a "new sharp threshing instrument having teeth" as a type of agricultural tool!

In that case, I'd like to propose a few possibilities:

1. Thresher: A thresher is a machine that separates grain from its chaff and straw. It typically has rotating teeth or spikes that beat the grain, loosening the grain from the chaff and straw.
2. Threshing machine: A threshing machine is a type of agricultural equipment that separates grain from its chaff and straw. It often has rotating drums or rollers with sharp teeth or spikes that beat the grain, loosening the grain from the chaff and straw.
3. Combine harvester: A combine harvester is a machine that combines the tasks of reaping, threshing, and winnowing grain. It typically has rotating drums or rollers with sharp teeth or spikes that beat the grain, loosening the grain from the chaff and straw.

Please let me know if any of these options match what you had in mind!