1. The internal mechanism of a device
   - works 
2. A mine or quarry that is being or has been worked
   - working

Type of: excavation, mechanism

• escrow funds
• escudo
• esculent
• escutcheon
• ESE
• esemplastic
• eserine
• Esfahan
• Esidrix
• Eskalith
• esker
• Eskimo
• Eskimo curlew
• Eskimo dog
• Eskimo-Aleut
• Eskimo-Aleut language
• Esky
• ESL
• ESM
• Esme Stuart Lennox Robinson
• esmolol
• Esocidae
• ESOP
• esophageal
• esophageal reflux