The idiom "chill to the bone" means to feel extremely cold or shiver uncontrollably, often due to being exposed to cold weather or feeling frightened or nervous. Example sentences:

• I was chilled to the bone after spending hours outside in the snow.

The idiom "all bark and no bite" refers to someone or something that is all talk but lacks substance. It suggests a lack of action or follow-through, and can be used to describe people who are overly critical or negative without providing any constructive feedback or solutions.

The idiom "dead in the water" means to be completely helpless or unable to move, usually due to a problem with one's physical abilities or technology. It can also refer to an organization, project, or plan that is failing or stagnated.

The idiom "knock out" means to defeat or render someone incapable of performing a task, usually due to injury or illness. It can also mean to eliminate or remove something completely.

The idiom "just what the doctor ordered" is used to describe something that is exactly what someone needs or wants. It is often used to describe a meal, a place, or an activity that satisfies someone's cravings or preferences.