Ship's top off.

• Modern mixtape medium, for short
• It was once burned for data
• Mil. leader
• Burnable medium, briefly
• MP3 burning medium, possibly
• Part of 'C in C': Abbr
• Navy officer: Abbr
• Lt. Col. : Army :: __ : Navy
• Burnable data holder: Abbr.

Wikipedia Word definitions in Wikipedia
CDR may refer to: