Why queue (from which word Q)?

The word "queue" comes from the English word meaning "line" — a sequence of objects waiting to be processed.

In programming, a queue is a data structure that operates on the FIFO (First In, First Out) principle, meaning the first element added is the first to be processed.

In Go (Golang), the term "queue" is used to refer to such structures, and the name reflects this working principle, not an abbreviation or acronym of another word.

Thus, "queue" is simply an English word describing the concept of a queue, not an abbreviation of "Q" or any other word.