Definitions for "Host computer"
A central computer, such as a mainframe computer at a company's headquarters or central office. The central computer in a star network.
the primary computer in a multi-processor network that issues commands, accesses the most important data, and is the most versatile processing element in the system.
A computer that performs central processing for a telecommunications network.
Keywords:  emulator, workstation, sql, guide, user
The PC or other workstation through which the user communicates with the emulator
(SQL*Plus User's Guide and Reference; search in this book)