1
general::
Phrase(s): register in something
to enter one’s name on a list for something; to sign oneself up to belong to something. • Are you going to register in the pie-eating contest? • We registered in the drawing for a new car., Phrase(s): register someone in something
1. to enter someone’s name on a list in something. • I will register you in the competition. 2. to sign someone up to belong to something. • I registered my cousin in the club.
McGrawhill's American Idioms And Phrasal Verbs