> []{} (continuative form) of a verb in potential form + +
=
> "to make/leave someone unable to (verb)"
[]{} is the of , which is the potential form of . ( is also the of . is so underrated among many J-learners IMHO. How does one say anything correctly and naturally without using it?)
, needless to say, is the imperative form of .
= "to move freely" ← A very useful expression to learn.
Thus, the sentence in question literally means:
> "Make him unable to move (freely)!"
More naturally,
> "Bind him hand and foot!"