Possible Clues:

• Hacker into a coconut, perhaps
• Tool that'll definitely hack it
• Large knife revolutionary friend brought round
• Knife whose (Oxford Dictionary) etymology refers to the word “hammer”
• Pal packing revolutionary weapon
• Underbrush clearer
• Sugar cane knife
• Partner impounding short cook's big knife
• Teach me to fashion knife
• Large heavy knife for cutting vegetation