Definition: To capture (a person or animal that tries or would try to escape).
There are some specific signs for CATCH, depending on what subjects and objects are.
To catch something (e.g. ball or another object).
To catch (something or animal) with talons (eg. eagles or other large birds of prey catching a small animal by talons).
The "3-claw" classifier handshape represents talons. The movement depicts the way a flying bird catches with its talons.