Building blocks stacked high tower.

Meaning: This sentence describes building a tall, narrow structure using small, solid objects placed one on top of another.

Choice of Words: Building means constructing something. Blocks are small, solid objects used for building. Stacked means placed one on top of another. High means tall. Tower is a tall, narrow building. When you put them together, it means small, solid objects were placed one on top of another to make a tall, narrow structure.