In syntax, a transitive verb is a verb that requires both a subject and one or more objects. Some examples of sentences with transitive verbs:

Kyle sees Adam. (Adam is the direct object of "sees")
You lifted the bag. (bag is the direct object of "lifted")
I punished you. (you is the direct object of "punished")
I give you the book. (book is the direct object of "give" and "you" is the indirect object of "give")

An intransitive verb has a subject but does not have an object. For example, in English, the verbs sleep, die, condescend and swim, are intransitive.