As a conventional written or printed symbol: = asterisk, n. 3.

A similar mark or sign of small size used to mark a passage in a book, etc.; a mark made, in place of his signature, by one who cannot write.

A figure of a windmill; a sign or character resembling this, as a cross or asterisk. Also attributive. Now rare or Obsolete.

esp. The figure of a star (*) used in writing and printing: (a) as a reference to a note at the foot or margin of the page; (b) to indicate the…

‘Note well’ (used to draw attention to something important in a written text). Also as n.: an instance of the use of this.

A group of three asterisks placed thus (⁂) to direct attention to a particular passage. Rarely, a single asterisk (*) so used.

An instance of the written comment ‘nota bene’; an indication that something is to be noted well; (also) something which should be noted well or…