juice, such as fruit juice.
the quality of being juicy.
Since ancāelle is a stative noun, it has to agree with the noun it modifies, even if that noun is not directly expressed. So:
la jajāla jacāelle; ‘The fruit is juicy.’
la jacāelle; ‘It is juicy.’
Is this a general term for any kind of juice, or does it come from a word for a fruit or something?
Actually, it does come from the same root as ‘fruit’ (which will appear as a word very soon), but its meaning has expanded to include any kind of juice.