Related Clues:

• Musicians' instruments, slangily
• Tools on fire trucks
• Hewing tools
• ''Protect it from __ that hack'' (''The Lorax'' advice)
• Plot lines
• Firewood splitters
• Fires member
• Guitars, slang
• Log splitters' tools
• Log choppers
• Tools with heavy-bladed heads
• Breaks open, perhaps
• Chops, drops, or lops
• Guitars, slangily
• Lines of a plane