From Longman Dictionary of Contemporary Englishscratchpadscratch‧pad /ˈskrætʃpæd/ noun [countable] 1 D American English several sheets of cheap paper that are joined together into a small book you can write notes in2 a small screen on a mobile phone that lets you write short notes and stores them for you
Examples from the Corpus
scratchpad• Topping the heap at 36K is Memo Pad which gives you a scratchpad facility. 