From WordNet (r) 3.0 (2006):
abstract
adj 1: existing only in the mind; separated from embodiment;
"abstract words like `truth' and `justice'" [ant:
concrete]
2: not representing or imitating external reality or the objects
of nature; "a large abstract painting" [syn: abstract,
abstractionist, nonfigurative, nonobjective]
3: dealing with a subject in the abstract without practical
purpose or intention; "abstract reasoning"; "abstract
science"
n 1: a concept or idea not associated with any specific
instance; "he loved her only in the abstract--not in
person" [syn: abstraction, abstract]
2: a sketchy summary of the main points of an argument or theory
[syn: outline, synopsis, abstract, precis]
v 1: consider a concept without thinking of a specific example;
consider abstractly or theoretically
2: make off with belongings of others [syn: pilfer, cabbage,
purloin, pinch, abstract, snarf, swipe, hook,
sneak, filch, nobble, lift]
3: consider apart from a particular case or instance; "Let's
abstract away from this particular example"
4: give an abstract (of)