I. ˈ ̷ ̷ ¦ ̷ ̷ adjective
Etymology: lap (I) + -top (as in desktop — herein)
: of a size and design that makes operation and use on one's lap convenient
a laptop personal computer
II. noun
: a portable microcomputer having its main components (as processor, keyboard, and display screen) integrated into a single unit capable of battery-powered operation