Give me a second asks for a very short delay. Give me a second, I am nearly finished.
The second is never a second, which everybody understands. It is informal, and give me a minute is the same request with more honesty in it.
1phrasegive me a secondAsking for a very short delay.
“Give me a second and I will find the file.”
give me a second is a phrase.
Practised in Small Talk & Everyday Phrases