1. partly lighted shadow.   Hint First letter clue   2. path followed by body under forces.   First letter clue   3. tool for pounding or grinding in a mortar.   First letter clue   4. substance or liquid that dissolves solute.   First letter clue   5. tube with patterns from colored glass piece reflections.   First letter clue   6. observed fact or occurrence subject to scientific study.   First letter clue   7. thick-skinned animal (or person).   First letter clue