(n) number
(P)
(n) f-number (photography)
(n) number one
(P)
(n) guide number
(n) call number
(n) number eight
(n) number crossword (var. of kanji crossword puzzle with numbers where squares with the same number contain the same kanji)
(n) back issue (of a publication)
back-number
(n) (comp) serial number
(n) number plate
licence plate
license plate
(P)
(n) sudoku (wasei: number place)
(n) flight-number
(n) magic number
(n) round number
(n) (comp) unnumbered connection
(n) opening number
(n) standard number
(n) (1) number display
(2) caller ID (on telephones)
(n) (comp) number display
(n) (mobile phone) number portability