1. An external ring of striated muscle surrounding the anus

Type of: skeletal muscle, striated muscle

Part of: anal sphincter, musculus sphincter ani, sphincter ani

• tool kit
• tool steel
• tool-and-die work
• toolbar
• toolbox
• tooler
• toolhouse
• toolmaker
• toolshed
• toom
• toon
• Toona
• Toona calantas
• toonie
• tooshie
• toot
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• tooth
• tooth and nail
• tooth decay
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• tooth enamel
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• tooth root