Sentence:  Juanita drooped about the place , wearing a haunted , brooding look , which Kate attributed to the baby 's death , until the day a letter came for her addressed to `` Miss Juanita Fitzroy '' , bearing a Grafton <WSD>postmark</WSD> . 
Meaning of the word marked with <WSD> tags:  a cancellation mark stamped on mail by postal officials; indicates the post office and date of mailing