The lint that collects within the belly-button cavity. Note: This word is unknown to people with outies (where the belly-button protudes out, not in). Example: Look at all my navel-fluff. I could make a jumper out of that.
NAVEL-FLUFF
Meaning of NAVEL-FLUFF in English
Slang English vocab. Английский сленговый словарь. 2012