crucial /krooˈshəl/

1. Testing or decisive
2. Essential, very important
3. Very good (slang)
4. Crosslike
5. Of the nature of a crux

• bronchial
• bronchial tube
• bronchial tubes
• bronchiectases
• bronchiectasis
• bronchiolar
• bronchiole
• bronchioles
• bronchiolitis
• bronchitic
• bronchitics
• bronchitis
• bronchitises
• broncho
• broncho-
• bronchoconstrictor
• bronchoconstrictors
• bronchodilator
• bronchodilators
• bronchographies
• bronchography
• bronchopneumonia
• bronchos
• bronchoscope
• bronchoscopes