English Idioms About “Parts of the body”
Idiom: To cost an arm and a leg
Meaning: (Also cost a bomb,the earth,a packeta, a small fortune) extremely expensive.
Example: I’d love to buy a Rolls-Royce, but it costs an arm and a leg.

English Idioms About “War”
Idiom: Bring a knife to a gunfight
Meaning: (Also, take a knife to a gunfight) To enter into a confrontation or other challenging situation without being adequately equipped or prepared.
Example: We lost the deal against much equipped competitors because we brought a knife to a gunfight.

English Idioms About “Parts of the body”
Idiom: Raise eyebrows
Meaning: To cause surprise or mild disapproval.
Example: The way the children behaved raised a few eyebrows the hosts.

English Idioms About “General”
Idiom: Weep buckets
Meaning: (Also cry buckets) to cry a lot.
Example: She cried buckets, because that was such a sad event.