The Collaborative International Dictionary
bare-bones
bare-bones \bare"-bones`\ (b[^a]r"b[=o]nz`), a. having only the absolute minimum necessary; having only the essential components.
Wiktionary
bare-bones
a. 1 minimalist; lacking that which is not essential. 2 (context computing English) Describes a computer sold pre-assembled, but without certain essential components, often a processor, memory, and hard drive.