Related Clues:

• Lock down
• Part of KISS
• Utilize again
• "___ on truckin"'
• Avail of again
• Part of a waste reduction strategy
• "___ up the good work!"
• Don a hand-me-down
• Main tower of a castle
• Carry On Castle?
• Get extra value from, say
• Don't just throw away
• One of the three ''green'' R's
• Castle tower; cost of maintenance
• Glance quickly back, seeing tower