designating a card, ticket, etc. with a coating that when scratched reveals writing, numbers, scent, etc.
The scratch-off card is used for lottery games, quizzes, and to conceal PINs for telephone calling cards and other prepaid services.
also scratch-off , (n.)
noun 1. a pad of paper used for jotting down ideas, informal notes, preliminary writing, etc. noun 1. (mainly US & Canadian) a notebook, esp one with detachable leaves 2. (computing) a small semiconductor memory for temporary storage
- Scratchpad i
language A general-purpose language originally for interactive symbolic mathematics by Richard Jenks, Barry Trager, Stephen M. Watt and Robert S. Sutor of IBM Research, ca 1971. It features abstract parametrised data types, multiple inheritance and polymorphism. There were implementations for VM/CMS and AIX. [“Scratchpad User’s Manual”, RA 70, IBM (June 1975)]. (1994-12-15)
- Scratchpad ii
See Scratchpad I, AXIOM. [“Scratchpad II Programming Language Manual”, R.D. Jenks et al, IBM, 1985]. [Scratchpad II Newsletter: Computer Algebra Group, TJWRC, Box 218, Yorktown Hts, NY 10598].
/ˈskrætʃˌpleɪt/ noun 1. a plastic or metal plate attached to the front of a guitar to protect it from pick scratches