To form the boundary of; be contiguous to; SYN. border.

(Irregular preterit, past participle: leaped).
To pass abruptly from one state or topic to another; SYN. jump.

1. To move down on as if in an attack; SYN. swoop.
2. To make a sudden assault or approach
3. To swoop upon and seize something with or as if with talons
4. To dust, rub, finish, or stencil with pounce

(Irregular preterit, past participle: sprang; or p.p.: sprung).
1. To develop suddenly.
2. To leap suddenly.
3. To produce or disclose suddenly or unexpectedly.