tunnel
1. tun.nel \'t*n-*l\ \-*l-.(l)i-k\ n [ME tonel tube-shaped net, fr. MF,
tun, fr. OF, fr. tonne tun, fr.]ML tunna, of Celt origin; akin to MIr tonn
skin, hide; akin to L tonde-re to shear - more at TOME 1: a hollow conduit
or recess : TUBE, WELL 2a: a covered passageway; specif : a horizontal
passageway through or under an obstruction 2b: a subterranean gallery (as
in a mine) 2c: BURROW - tun.nel.like aj
2. tunnel \'t*n-lin, -*l-in\ \'t*n-l*r, -*l-*r\ vb or tun.neled or
tun.nelled; or tun.nel.ing; or tun.nel.ling : to make a tunnel or similar
opening through or under : to make or use a tunnel - tun.nel.er n