Someone or something that closes.

Someone or something that concludes.

(sales) Synonym of close (“the point at the end of a sales pitch when the consumer is asked to buy”)

The last stone in a horizontal course, if smaller than the others; a piece of brick finishing a course.

(baseball) A relief pitcher who specializes in getting the last three outs of the game. See Wikipedia:closer (baseball)

comparative form of close: more close

Within a shorter distance.