Related Clues:
- Leaf rib; ore layer in rock
- Main traffic route
- Important transport route
- No way hors-d'oeuvre must precede variable main course
- Transporter heading off on unknown, vital route
- What sounds like empty-headed streak
- Distinctive quality, useless if pronounced
- Five-one to Germany - that shows style
- Vessel for claret wine filled with ultimate in Bourgogne
- Blood vessel; important route
- Style — bootless by the sound of it
- Distinctive style useless on the radio
- Main line of railway following a route that avoids centre of Slough
- The ear's puffed up — blood vessel visible
- Sounding futile, but part of a vital system