Source: The Great Interpretation of Dreams (Ibn Sirin)
(By analogy with its linguistic meaning and as a tool) A fork (eating utensil) in a dream may indicate a difficult man or a matter involving hardship. Eating with it may indicate gaining sustenance with fatigue or in an unusual way.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
(By analogy) A fork may indicate worry and grief because of 'thorns' (shawk). It may also indicate a friend or helper who assists in matters.
Source: Signs in the Science of Expressions (Ibn Shaheen)
(By analogy) A fork is interpreted as worry or dispute.