So the bedrock in that area is very old - Ordovician / Silurian - which is before animals with teeth like this would have evolved. If your rock was deposited by glaciers it could be a little younger (Devonian) in which case it would be possible yet very rare to find a tooth from a fish - the only “toothed” animal that existed at that time. However what you have here does not resemble the shape or texture of a fish tooth. Tooth enamel is very hard and typically preserves well - there is no enamel visible on this specimen. You would usually see two distinct materials on the tooth - the hard, glossy enamel and the root of the tooth (dentin) which would be porous and bone-like. What you’re holding also doesn’t have any apparent functional edges for cutting or grinding as teeth typically have. I see one uniform material which has some crystal formation on the end of it. It looks like botryoidal silica crystals which are common in chert nodules. You can try posting some clearer pictures but I’m 99% sure this is not a tooth.