tunnel
Pronunciation:
/ˈtʌn(ə)l/noun
Definitions
An underground or underwater passage.
A passage through or under some obstacle.
A hole in the ground made by an animal, a burrow.
A wrapper for a protocol that cannot otherwise be used because it is unsupported, blocked, or insecure.
verb
Definitions
To make a tunnel through or under something; to burrow.
To dig a tunnel.
To transmit something through a tunnel (wrapper for insecure or unsupported protocol).
To insert a catheter into a vein to allow long-term use.