intransitive verb
Definition: To take on a shape similar to a bag or pouch.
Example: The fabric will pouch when it is not stretched properly.
noun
Definition: A small bag or container used for carrying items, often made of flexible material.
Example: She put her phone in her pouch before heading out.
transitive verb
Definition: To put something into a small bag or pocket-like container, or to make something look like a small bag.
Example: The bird pouches its food in its cheek.