1. tool with jaws for holding work.   vise   magnitude   synthesis   medium   Hint Half-n-half Clue   2. record of daily activities.   symmetry   sextant   trajectory   log   Half-n-half Clue   3. tool for pounding or grinding in a mortar.   quagmire   pestle   innovation   pterodactyl   Half-n-half Clue   4. flying reptile now extinct.   pterodactyl   lumen   patina   sextant   Half-n-half Clue   5. increase.   increment   precipitant   turbulence   velocity   Half-n-half Clue   6. supporting bar in framework or pompous walk.   matrix   strut   uniformity   incline   Half-n-half Clue   7. band of colors formed when light passes though a prism.   virus   spectrum   kaleidoscope   penumbra   Half-n-half Clue