Possible Clues:

• Trendy to be in this settled routine?
• Rut for that Armada
• Nothing among the trees to make a furrow
• Channel in wooded area contains nothing
• Long narrow channel in surface of hard material
• Tongue partner
• Group of trees in a ring? On the contrary, a rut
• What will go round 5 down and go over
• A long narrow furrow
• A number of trees round about this slight depression