cross-tunnel

English

Etymology

From cross- +‎ tunnel.

Noun

cross-tunnel (plural cross-tunnels)

1. A tunnel linking two parallel main tunnels.
   • 2021 July 14, Paul Stephen, “A portal into the future”, in RAIL, number 935, page 53:

     Despite launching more than a month earlier than Cecilia, Florence is actually due to re-emerge an estimated six weeks later. This is because all of the cross-tunnels to link the main bores will be mined from Florence 's side.