Possible Clues:

• Mark part of the intestine
• Body part and punctuation mark
• Running behind officer showing some guts
• One indicating ratio of emigrant group without base
• Double-dot punctuation
• Emoticon's ''eyes''
• List preceder, often
• Covenant of League of Nations opens with a long-winding internal piece concerned with Digest
• Panamanian port: food channel
• City at the Caribbean entrance to the Panama Canal