ploughshare

"to sharpen a pencil or a knife or a musical note"

"The new math homework was easily understood by the students. "

"The mining company explored for metal ores in the remote mountain ranges. "

"My teacher said I could retake the test if I studied hard. "

"The dry-stone wall used a large, flat through to support the top stones. "

"The chef carefully sharpened the blade of his knife before preparing the vegetables. "

"The edge of the table is where the tabletop meets the floor. "

"The farmer carefully tilled the soil to prepare the field for planting tomatoes. "

"The carpenter carefully cutting the wood with a sharp knife. "

"My sister, typically, wakes up early for school. "

"The farmer planted corn in his fields every spring. "

"The farmer estimated that his plow covered 120 acres each year. "