a book of blank pages with pockets or envelopes; for organizing photographs or stamp collections etc
one or more recordings issued together; originally released on 12-inch phonograph records (usually with attractive record covers) and later on cassette audio tape and compact disc
slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled; "the oblique rays of the winter sun"; "acute and obtuse angles are oblique angles"; "the axis of an oblique cone is not perpendicular to its base"