Related Clues:

• Comic-book siren sound
• Academic basics, casually
• Comb's target
• Traffic jam, e.g.
• The basics, in a way
• Weimaraner warning
• Hound sound
• Spot's warning
• Tangled mass
• Wolf's warning
• Mad dog's threat
• Freeway problem
• Basic education, familiarly
• Mongrel's warning
• Warning from a boxer, perhaps