Meaning of the word "in a word" in English

What does "in a word" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

in a word

US /ɪn ə wɜːrd/
UK /ɪn ə wɜːd/
"in a word" picture

Phrase

briefly; in short

Example:
In a word, the plan is a disaster.
He's charming, intelligent, and, in a word, perfect.