Brown–Driver–Briggs: אָסַר

[אָסַר] vb. tie, bind, imprison

Qal

1. tie, bind, for security

2. tie, harness

3. bind, with cords

4. gird (rare & late)

5. begin the battle, make the attack

6. fig. of obligation of oath or vow

Niph. be bound, imprisoned

Pu. be taken prisoner