ASK A QUESTION when is pequito used?
Poco means a little. The 'ito' is a diminutive ending used to say something is actually even smaller or less.
Poco - little Poco - very little
Poco is not used to refer to the size of a person. It is really used to refer to volume or amount of something.
For example, you would not say, "Cuando fui poco" to say "When I was small."
Hablo poco español is the way I hear it said here in Colombia.
In case you didn't see my other comment, it is spelled poquito.