What does "bleeding the brakes" mean?

What does "bleeding the brakes" mean? 1972 Alfa Romeo GT Veloce / ep315 We've all heard the phrase "bleeding the brakes", but what does this actually mean? Ash explains... The Alfa Romeo 2000 GT Veloce (also known as 2000 GTV) was introduced in 1971 together with the 2000 Berlina sedan and 2000 Spider. The 2000 range was the replacement for the 1750 range. Once again the engine was rationalized throughout the range. The engine displacement was increased to 1962 cc with a change of the bore and stroke to 84 mm × 88.5 mm. Oil and radiator capacities remained unchanged. The engine produced 132 PS (97 kW; 130 hp) at 5500 rpm with the SPICA fuel injection, which, once again, was only fitted to cars destined for the United States and Canadian markets, with carburetors retained for other markets producing officially the same power.    / @theworkshopuk   "The Workshop" t-shirts NOW AVAILABLE: http://rie-store.com/store How to restore your Harley - the bible we use: https://amzn.to/30xSt1y All the music we use comes from here: https://bit.ly/2X5v59w Join us on Instagram for regular photos   / riestoreltd   Our website: http://rie-store.com/ All business enquiries to stuart@rie-store.com Tel: Stuart at RiE-Store Ltd on 07887 794928 Weekly series documenting our work, plus hints, tips, tricks and Q&A. Subscribe now - New video EVERY FRIDAY. To have your question answered please use the hashtag #askash in the comments.