An intricacy is a small, complicated detail that requires careful attention to understand or create. When you examine the intricacies of a mechanical watch, you're looking at hundreds of tiny gears, springs, and wheels working together in precise ways. When a teacher explains the intricacies of long division, she's breaking down all the small steps that make the process work.

The word comes from “intricate,” meaning complicated or detailed. Something with many intricacies has layers of complexity that aren't obvious at first glance. A spider's web reveals its intricacies when you look closely: each strand connects to dozens of others in a specific pattern, and the whole structure depends on these small connections.

You might study the intricacies of chess strategy, learning subtle moves that aren't immediately obvious. Or you could appreciate the intricacies of a novel's plot, noticing how small details early in the story connect to bigger events later.

The word suggests that understanding something fully requires patience and attention. When someone says, “I don't understand all the intricacies,” they mean they grasp the basic idea but haven't mastered the finer points yet.