Bleeding

[1] The tapping of air from a gas turbine compressor to prevent surging.
[2] The tapping of air from a gas turbine compressor to feed some other equipment, e.g., cabin pressurization or a de-icing system.
[3] A paint defect in which a constituent in an underlying surface discolors subsequent coatings, perevented by applying a barrier coating.
[4] A method of improving the thermal efficiency of a steam plant by withdrawing a small part of the steam from the higher-pressure stages of a turbine to heat the feed-water.
[5] Removing undesirable entrapped air from a hydraulic (e.g., braking) system.
[6] Diffusion of dye from an photographic image.
[7] In fibers, yarns or fabrics of two or more colors, the running of the darker colors, and consequent staining of the lighter colors; during finishing, washing, or solvent cleaning. See also brake bleeding