noKanji property
This element, which will usually have a null value, indicates that the reb, while associated with the KanjiElement.element, cannot be regarded as a true reading of the kanji. It is typically used for words such as foreign place names, gairaigo which can be in kanji or katakana, etc.
Quoted from JMdict:115-119 Current implementation defaults to false when this element is not defined
Implementation
final bool noKanji;