Main Entry:

²tunnel

Function:

verb

Inflected Form(s):

tunneled or tunnelled; tunnel·ing or tunnel·ling \ˈtən-liŋ, ˈtə-n^əl-iŋ\

Date:

1795

intransitive verb1: to make or use a tunnel2physics : to pass through a potential barrier <electrons tunneling 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 \ˈtən-lər, ˈtə-n^əl-ər\ noun