mactop
Any portable Apple Macintosh computer with a clamshell form factor. Includes the (unsuccessful) Macintosh Portable, Macintosh PowerBook and iBook computers.
"My mum's Mactop is broken"
"What kind is it?"
"She has a G3 Powerbook, it's a Lombard"
"What kind is it?"
"She has a G3 Powerbook, it's a Lombard"