It's for stability. The groove usually matches exactly with a cup from the same tea set. it's designed to keep the cup on the saucer.
It depends what you mean by "flying saucer". There have been circular aircraft, dating back almost to the invention of flying machines themselves, but so far no-one has built a "flying saucer" that operates the way supposed UFOs do.
there is no antonym for saucer
To slow down the cooling process of a cup of tea, you can try using a thermal mug or placing a lid on the cup to reduce heat loss through evaporation. Additionally, wrapping the cup in a towel or placing it in a cozy can help retain heat for longer periods.
Saucer Attack was created in 1984.
Saucer Attack happened in 1984.
Simply Saucer was created in 1973.
A Saucer of Loneliness was created in 1953.
Saucer to Saturn was created in 1995.
Rogue Saucer was created in 1996.
The first report where "saucer" was mentioned was that of Kenneth Arnold, who described a non-circular craft but said that they flew the way a "saucer skipped across water".This was taken out context by subsequent newspaper reports and applied to the shape of the craft themselves.
You should place a saucer under the cup to catch any spills. The term 'flying saucer' comes from the plate-like appearance of some UFOs. The cat is happy to get a saucer of milk in the morning. Seldom, people claim to see a flying saucer.