block something in

Từ điển Oxford Advanced Learner 8th

▪ I. ˌblock sthˈin derived
to draw or paint sth roughly, without showing any detail
•I have blocked in the shapes of the larger buildings.
Main entry: ↑block_derived
 
▪ II. ˌblock sb/sthˈin derived
to prevent a car from being able to be driven away by parking too close to it
•He found that his car had been blocked in.
Main entry: ↑block_derived