Dictionary.com
Thesaurus.com

lapheld

British  
/ ˈlæpˌhɛld /

adjective

  1. (esp of a personal computer) small enough to be used on one's lap; portable

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012