The smock mill Goliath in front of the wind farm Growind in Eemshaven in the Netherlands. A windmill is a mill that converts the energy of wind into rotational energy by means of vanes called sails or blades. Centuries ago, windmills usually were used to mill grain (gristmills), pump water (windpumps), or both.
When bat guano is harvested, it is in a powdered form. Plants that can benefit from the use of bat guano fertilizer include vegetables, herbs, ornamentals, and fruit and nut trees.
A bat is a stick used by the batter to hit the baseball. Baseball bats were traditionally made from ash, though other hardwoods have been used. Hollow metal (such as aluminum) and composite bats are now standard in most amateur baseball and some professional leagues outside of North America.