15. a closed book anyone or topic that may be unidentified or over and above comprehension: chemistry can be a closed book to him. I would wish to book a table for 4 persons for tonight at eight o'clock (UK) → أُرِيدُ حَجْزَ مَائِدَةٍ لأَرْبَعَةِ أَشْخَاصٍ اللَيّلَةَ فِي تَـمَامِ السَاعَةِ https://soundcloud.com/david-hoffmeister