This phrase doubtless refers to a crossword clue the place the reply is a phrase or phrase signifying a week-long journey by air. A typical instance could be a clue like “Journey by airplane for per week” with the reply being “SEVEN-DAY FLIGHT” or an identical building. The clue’s problem would rely upon the encircling clues and the general complexity of the puzzle.
Such clues mix common information with wordplay, participating solvers to suppose each actually and laterally. Using a selected timeframe, like seven days, provides a layer of complexity, requiring solvers to think about phrases or phrases associated to period inside the context of air journey. Such a clue could be significantly difficult in cryptic crosswords the place the clue might comprise puns, anagrams, or different wordplay components. In the end, efficiently fixing such clues contributes to the pleasant psychological train that crosswords present.