a group of students or participants; a category of things or people categorized by common traits.

to remove dirt, marks, or unwanted matter from something; free from dirt.

easy to see, hear, or understand; free of cloudiness or confusion.

a surname; in historical context, a clerical position or administrator.

a device used to hold objects tightly together, often used for woodworking.

shoes typically made of wood or thick material; to block or become blocked.

material made by weaving fibers together; used for making clothes or other items.

to make an exact copy of; a cell or organism that is genetically identical to another.

to hold tightly to; past tense of cling.

to assert something as a fact; a demand for something as rightful.