Indulging only covertly

• Designed to elude detection
• The next to highest level of official classification for documents
• Having an import not apparent to the senses nor obvious to the intelligence
• Any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream
• Conducted with or marked by hidden aims or methods
• Not open or public
• Not expressed
• Beyond ordinary understanding

WordNet Word definitions in WordNet
n. any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream [syn: gland , secretory organ , secretor ]

Wiktionary Word definitions in Wiktionary
n. (alternative spelling of secretor English)