n.
Function: verb
Inflected Form: -neled or -nelled ; -nel · ing or -nel · ling \ ' t ə n-li ŋ , ' t ə -n ə l-i ŋ \
Date: 1795
intransitive verb
1 : to make or use a tunnel
2 physics : to pass through a potential barrier <electrons tunnel ing through an insulator between semiconductors>
transitive verb : to make a tunnel or similar opening through or under also : to make (one's way) by or as if by making a tunnel
– tun · nel · er \ ' t ə n-l ə r, ' t ə -n ə l- ə r \ noun