To cut, trim, or to clip something (hair, wool, bushes, etc.) from something: "Today is the day he will shear the sheep."

"Tomorrow he will shear the lawn and the bushes."

A cutting instrument similar to scissors but typically larger and heavier that is usually referred to in the plural: "He bought a new pair of shears so he could trim the hedge."

1. Something that is thin and almost transparent: "Her light summer coat was made of the sheer cotton that she bought at the store."
2. Straight up and down, perpendicular: "They decided they could not climb the sheer cliff today, but they are determined to try it tomorrow."
  3. To act with focused determination: "She won the scholarship through her sheer determination to excel in all her examinations."