Anchor
An anchor is a device, normally made of metal, used to connect a vessel to the bed of a body of water to prevent the craft from drifting due to wind or current. The word derives from Latin "ancora", which itself comes from the Greek ἄγκυρα ("ankura").
Anchor paper
An anchor paper is a sample essay response to an assignment or test question requiring an essay, primarily in an educational effort. Unlike more traditional educational assessments such as multiple choice, essays cannot be graded with an answer key, as no strictly correct or incorrect solution exists. The anchor paper provides an example to the person reviewing or grading the assignment of a well-written response to the essay prompt. Sometimes examiners prepare a range of anchor papers, to provide examples of responses at different levels of merit.