Definition of crossword noun from the Oxford Advanced Learner's Dictionary

crossword

noun
ˈkrɒswɜːd
 
; ˈkrɔːswɜːrd
 
(also crossword puzzle)
 
a game in which you have to fit words across and downwards into spaces with numbers in a square diagram. You find the words by solving clues
to do a/the crosswordI've finished the crossword apart from 3 across and 10 down.