Preheat oven to 350 degrees.
Line a 9 inch loaf pan with parchment paper.
In a medium bowl, whisk together the flour and baking powder. Set aside.
In a mixing bowl using an electric mixer, beat the butter for about 3 minutes, until light in color.
With the mixer on, gradually incorporate the sugar and beat until light and fluffy.
Add eggs one at a time to the butter mixture and blend together on low speed.
Mix in the Meyer lemon zest, Meyer lemon juice, sour cream, and vanilla extract until smooth and well combined.
Gradually add the dry ingredients to the wet ingredients, mixing just until incorporated.
Pour the batter into the prepared bread pan and bake for 50-60 minutes. Tent the cake with aluminum foil halfway through baking to prevent the top from over browning. A toothpick inserted into the middle of the cake should come out clean.
Remove the pound cake from the oven and allow to cool on a wire rack.
While the lemon cake cools, combine glaze ingredients in a bowl and mix by hand or with an electric mixer until smooth.
Allow the pound cake to fully cool, then pour glaze over the top.
Enjoy!