Here are some common idioms that start with "take a":
* Take a break: To stop working or doing something for a short period of time to rest or relax.
* Take a chance: To do something risky or uncertain, hoping for a good outcome.
* Take a look: To examine or inspect something briefly.
* Take a nap: To have a short sleep, usually during the day.
* Take a peek: To have a quick look at something, often secretly.
* Take a stab: To try something, often without much confidence.
* Take a turn: To have a chance to do something, or to change direction.
* Take a walk: To go for a walk, usually for exercise or pleasure.
* Take a vote: To hold a vote on a particular issue.
To understand the meaning of the idiom, you need to consider the word or phrase that follows "take a".
For example:
* "I need to take a break and get some fresh air."
* "She decided to take a chance and apply for the job."
* "Can you take a look at this report for me?"
Please provide the complete phrase so I can help you understand the meaning of the idiom.