Pen, noun /ˈnoʊt.bʊk/ a book of plain paper or paper with lines, for writing on, whiteboard, noun /ˈwaɪt.bɔːrd/ a board with a smooth, white surface, often attached to a wall, on which you can write and draw using special pens, drawing pin, noun /ˈdrɑː.ɪŋ ˌpɪn/ a short, sharp pin with a flat, round top, used especially for putting up notices, noticeboard, noun /ˈnoʊ.t̬ɪs.bɔːrd/ a board on a wall on which notices can be fixed, board rubber, noun /bɔːrd ˈrʌb.ɚ/ a piece of soft material, often made of felt or foam, used for erasing chalk marks from a blackboard or pen marks from a whiteboard, overhead projector, noun /ˈoʊ.vɚ.hed prəˈdʒek.tɚ/ a device that projects images or text from a transparency onto a screen or wall, notebook, noun /ˈnoʊt.bʊk/ a book of plain paper or paper with lines, for writing on, computer, noun /kəmˈpjuː.t̬ɚ/ an electronic machine that is used for storing, organizing, and finding words, numbers, and pictures, for doing calculations, and for controlling other machines

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