Possible Clues:

• Seductress's out of bounds chambers
• Holy word leader put out - such will be hollow
• They sound as if they're all for Antrim
• Natural cavities in bones
• Cavities in insect shown by painter
• Sounds as if one knows where to find them - with the Academician under the insect
• Sin with us to make them
• An upturned craft up your nose
• Bodily cavities revealed in course of organ transplant
• Cavities cause some constant, raging toothache