Related Clues:

• It may be red or black
• Hill worker
• Tunnel builder
• Workers in a column
• Tunnel builders
• Queen's subjects
• Offspring of a queen
• Some workers
• See 2-Down
• Picnic spoilers
• Carpenters and harvesters
• Thesaurus abbr.
• Insect in a colony
• Six-foot worker, maybe
• Lowly laborer