A
winged insect which
buzzes around the house, infests the
garbage,
crawls on the
food when you're not watching, and generally
irritates the hell out of everyone. Even worse, they're hard to
kill because they can usually fly off before you can
swat them.
Also, a
fishhook dressed with
feathers,
tinsel, or other stuff to make it look like an insect.
Fish like to eat flies, but since it's difficult to
stick a fly on a hook, it's easier to use an artificial one. You can
buy flies in stores, but many
fishermen prefer to make their own.