Parameter kind of small tree, of which two types are distinguished: 1. the , Aegle marmelos, with sweet edible fruits and much used in making hedges, and 2. the , Crescentia acuminata, bitter , the fruits of which are inedible but which when hollowed out can be used to fetch and store water; the flesh of this fruit is used to remove rust from weapons [d7eef8147b3ec5c3e091fa832d1d0380]