Source: The Great Interpretation of Dreams (Ibn Sirin)
The boxthorn tree in a dream indicates a harmful man of bad character, or strife and evil.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Boxthorn indicates a slandering man who corrupts relations between people.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Boxthorn is interpreted as worry and evil.