A turbine engine component comprising: an airfoil portion having a pressure side wall and a suction side wall; a first cooling circuit embedded within said pressure side wall, said first cooling circuit having at least two passageways (112,114,116) embedded within said pressure side wall; a second cooling circuit embedded within said suction side wall, said second cooling circuit having at least two passageways (120,122,124) embedded within said suction side wall; at least one cooling fluid supply cavity (140,140') located between said pressure and suction side walls (106,108); characterised in that: each said cooling fluid supply cavity (140,140') has a first projecting portion (142,142') on a first side and a second projecting portion (146,146') on a second side opposite to said first side, said first projecting portion (142;142') being located between two adjacent embedded passageways (120,122,124) of said suction side cooling circuit and extending in a radial direction, and said second projecting portion (146;146') being located between two adjacent embedded passageways (112,114,116) of said pressure side cooling circuit and extending in a radial direction; each said projecting portion (142,142',146,146') communicating with at least one film cooling hole (150,152,154,156) formed in a respective pressure or suction side wall (106,108). an airfoil portion having a pressure side wall and a suction side wall; a first cooling circuit embedded within said pressure side wall, said first cooling circuit having at least two passageways (112,114,116) embedded within said pressure side wall; a second cooling circuit embedded within said suction side wall, said second cooling circuit having at least two passageways (120,122,124) embedded within said suction side wall; at least one cooling fluid supply cavity (140,140') located between said pressure and suction side walls (106,108); characterised in that: each said cooling fluid supply cavity (140,140') has a first projecting portion (142,142') on a first side and a second projecting portion (146,146') on a second side opposite to said first side, said first projecting portion (142;142') being located between two adjacent embedded passageways (120,122,124) of said suction side cooling circuit and extending in a radial direction, and said second projecting portion (146;146') being located between two adjacent embedded passageways (112,114,116) of said pressure side cooling circuit and extending in a radial direction; each said projecting portion (142,142',146,146') communicating with at least one film cooling hole (150,152,154,156) formed in a respective pressure or suction side wall (106,108). each said cooling fluid supply cavity (140,140') has a first projecting portion (142,142') on a first side and a second projecting portion (146,146') on a second side opposite to said first side, said first projecting portion (142;142') being located between two adjacent embedded passageways (120,122,124) of said suction side cooling circuit and extending in a radial direction, and said second projecting portion (146;146') being located between two adjacent embedded passageways (112,114,116) of said pressure side cooling circuit and extending in a radial direction; each said projecting portion (142,142',146,146') communicating with at least one film cooling hole (150,152,154,156) formed in a respective pressure or suction side wall (106,108).