didrachma /dī-drakˈmə/ or didrachm /dīˈdram/

A double drachma

• keylines
• keylogging
• key man
• key men
• key money
• Keynesian
• Keynesianism
• keynote
• keynoted
• keynotes
• keynoting
• keypad
• keypads
• keypal
• keypals
• key-plate
• key-plates
• key punch
• keypunch
• keypunched
• key punches
• keypunches
• keypunching
• key ring
• key rings