(~es, ~ing, ~ed)
1.
A ~ is bomb that is shaped like a tube and that travels under water.
N-COUNT
2.
If a ship is ~ed, it is hit, and usually sunk, by a ~ or ~es.
More than a thousand people died when the Lusitania was ~ed.
VERB: usu passive, be V-ed
3.
If someone ~es negotiations or plans, they deliberately prevent them from being completed or from being successful. (INFORMAL)
These attacks are seen as an effort to ~ the talks.
= sabotage, wreck
VERB: V n