Preheat oven to 350 degrees,
In a medium bowl add flour, baking powder, salt, and 1/2 tsp nutmeg. Mix well and set aside.
In a large mixing bowl add butter and sugar. Cream together until smooth on medium speed.
Add eggs and vanilla, letting them completely mix in.
Finally, add eggnog.
Now slowly pour in dry mix until well incorporated.
Grease a loaf pan.
Pour batter into the pan and smooth the top.
Bake for 50 minutes or until cooked through.
Let cool slightly then remove from pan and cool completely on a wire rack.
Once cooled mix together powdered sugar and 2 tbsp egg nog in a bowl to make a glaze.
Drizzle on top of the pound cake and sprinkle on remaining 1/2 tsp nutmeg.
Once the glaze is set, slice and serve.