Learner's definition of CAPABLE
able to do something
having the qualities or abilities that are needed to do something
— + of
a new train capable of (reaching) very high speeds
Many new cell phones are capable of connecting to the Internet.
He is not capable of making those medical decisions himself. [=he cannot make the decisions by himself because he cannot think clearly, he is too sick, etc.]
I don't believe that she's capable of murder. [=that she is the kind of person who could murder someone]
a storm capable of (causing) widespread destruction
[more capable; most capable]
skilled at doing something
able to do something well
◊ Something that is in capable hands is being done or dealt with by someone who has the skill and knowledge to do it well.