Related Clues:

• Kind of helmet
• Vegan's no-no
• Toiletry with a fragrant odor
• Sense
• Granny Smith throwaway
• Most vital part of some idea
• Nucleus
• Essential point
• Type of helmet
• Center of an apple
• Apple's leftover
• Nitty-gritty
• Fundamental
• Essential part
• Condensed meaning