Or you might complain about the din at a sporting event, where the announcer is screaming through the speakers; the fans are cheering, stomping, and booing; and the air keeps ringing with whistles and bullhorns.
Notice how a din is an unpleasant combination of many noises all at once. If there's just one kind of noise that's annoying you, like the blast of a fire alarm, that's not a din.
And, notice how a din is a thing: a noun, not a verb or an adjective. Use the word "a" or "the" right before it. Talk about a din of angry voices, the din in a packed restaurant, or the din of a thousand birds on the beach.
Make a flash card:
You can write your own definition and choose your own picture, or copy mine.
the loud, confusing, annoying sound of many things all at once
Write your own sentence!
You can use either of the two ideas I'll suggest, or you can invent your own. Include as much detail as you can!