The word "hirundo" is a scientific term that refers to a genus (a group of related species) of birds that are commonly known as swallows. These birds are known for their graceful flying and are often seen in the spring and summer, flying around in search of insects to eat.
In scientific literature, you might encounter "Hirundo" in taxonomic classifications. For instance: - "Hirundo rustica," which is the scientific name for the barn swallow.
There are no idioms or phrasal verbs that specifically use "hirundo," as it is a scientific term. However, you might encounter idiomatic expressions related to swallows in general, such as: - "One swallow does not make a summer," which means that one positive event does not mean that everything will be positive.
"Hirundo" is a scientific term for a group of birds known as swallows. It is used mainly in academic or scientific discussions.