Runway ~
A sidewalk which has a solid line painted all the way down the center,
so that slower pedestrians walk along in one lane,
and faster joggers, are free to go faster in the other lane, with less chance of knocking others over.
Glove compartment ~ A small pocket, inside each of your gloves, to hide a key or coin in, or to keep a small folded up note, reminding you of something.
Birdseed ~ Seeds that, grow into Birds. (That's where birds come from)
You can buy a big bag, of Birdseed, apparently to grow an entire flock of birds, if you'd like.
I don't know what you would feed that many birds, though, if you grew them all.
And it seems a waste to buy a large sack, of the seeds, and only use a few, so why do they sell it that way? I dunno.