/brāk/
1. vt. To cause to be broken (in any sense). "Your latest patch to the editor broke the paragraph commands."
2. v. (of a program) To stop temporarily, so that it may debugged. The place where it stops is a 'breakpoint'.
3. [techspeak] vi. To send an RS-232 break (125 msec of line high) over a serial comm line.
4. [UNIX] vi. To strike whatever key currently causes the tty driver to send SIGINT to the current process. Normally, break (sense 3) or delete does this.