Definition of "Abstract" :
noun: a concept or idea not associated with any specific instance
"He loved her only in the abstract--not in person."
noun: a sketchy summary of the main points of an argument or theory
verb: consider a concept without thinking of a specific example; consider abstractly or theoretically
verb: consider apart from a particular case or instance
"Let's abstract away from this particular example."
verb: give an abstract (of)
verb: make off with belongings of others
adjective: existing only in the mind; separated from embodiment
"Abstract words like truth' and justice'."
adjective: dealing with a subject in the abstract without practical purpose or intention
adjective: not representing or imitating external reality or the objects of nature
"A large abstract painting."