A thick, solid piece of something. He cut a chunk of cheese to serve with the crackers.
A significant amount or part of something. A large chunk of the budget was allocated to marketing.
(computing) A discrete, usually fixed-size, piece of data processed or transmitted as a unit. The video stream is delivered in 4-megabyte chunks to improve buffering.
(linguistics) A frequently recurring sequence of words or a multi-word unit learned or processed as a single item. Language learners often memorize common chunks like "at the end of the day."