Solutions Blu-... Disc has 4 entries with similar clues

• 3-letter words
• nel"... blu, dipinto di blu" (Domenico Modugno song)
• 7-letter words
• brusqueDiscourteously blunt
• frisbeeDisc for disc golf
• 8-letter words
• cyanosisA bluish discolouration of skin due to lack of oxygen in blood