What is the meaning of "hear for blocks" in the following sentences,
Hoeny is the name of the alligator.
Well, it had to happen. One day, Justin's mother went into the bathroom. Honey grinned at her in a friendly way. She let out a yell you could hear for blocks. Soon after that, Honey had to go to the zoo. (source: Justin's Alligator by Sandra Widener)