Hi<br/><br/>I saw this sentence in a story,<br/><br/>"Mrs. Fink had dropped into Mrs. Cassidy's flat one flight below"<br/><br/>so, that what does "dropped into" mean?<br/>and "one flight below"?<br/><br/>thanks <img class='emoticon' style='Width:19px;Height:19px;' data-delaysrc='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/Emoticons/1.gif' src='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/Emoticons/1.gif' alt='Emotion: smile'/>