air holes.
This metal drawer has 4 small holes on the bottom - placed next to the sink.
You can put holes in plastic pots by using a drill with a small drill bit or a heated metal skewer to carefully create holes in the bottom of the pot for drainage.
A clarinet is a long tube with a mouthpiece on one end and a bell shaped opening on the bottom end. Tone holes run down the clarinet in a vertical row. Besides these holes, there are also holes that are covered with metal rings. These are called keys. Most clarinets are made of wood but they can be also made out of plastic. The overall appearance of a clarinet is black with metal keys.
it's called the blade.
That is called the gallery.
the metal strip or anything for that matter that goes at the bottom of doorways is called a threshold.
The Viet War era duffle bags (called sea bags in the USN) had about 4 metal ringed holes around the edges. One of the metal ringed holes had a metal rod sticking out, it was about 2" or so long, and had an opening in which a padlock could go thru it. The GI stuffed the bag full, then tightened the opening containing all those holes; slipped 3 of those metal ringed holes OVER the metal rod, then slipped a padlock thru the opening in the metal rod. Now the bag was secured.
The metal section at the bottom of a spark plug is called the shell. The components of a spark plug are the center electrode, an insulator, a metal shell, and side electrodes.
The metal plate on a toaster is typically called the "crumb tray." It is located at the bottom of the toaster and is removable for easy cleaning and removal of accumulated crumbs.
Worn out shock absorbers, missing bottom out bumpers, worn suspension parts, I would recommend a garage safety inspect the front end soon!
no
0. Wait for fall. 1. Drain pool. 2. weld frame holes with addition of small squares of same/similar material as metal frame. 3. Cover with silicone so it is smooth, will not puncture liner. 4. Patch liner.