I
n.
1) to make a ~
2) a swallow ( BE ), swan ( AE ) ~
3) a back; headfirst; high ~
4) a crash ~ (of a submarine)
5) a power ~ (of a plane)
6) a ~ for (they made a ~ for the ditch)
7) a ~ from; into
8) ( misc. ) ( colloq. ) to take a ~ ('to lose a contest deliberately')
II
v.
1) to ~ headfirst
2) ( D ; intr. ) to ~ from; into (she ~d into the pool from the high diving board)