flattop

The Japan Times のDec 26, 2021の記事タイトルを引用します。

Chinese flattop sails between Okinawa main island and Miyakojima

記事の冒頭を読むと "flattop" の意味が直ぐに分かりました。

The Chinese Navy’s Liaoning aircraft carrier and four other warships from the country passed through waters between the main island of Okinawa Prefecture and the island of Miyakojima, around midnight Friday, Japan’s Defense Ministry said Sunday.

航空機を運んでいる軍艦 "aircraft carrier"　なので "flattop" は航空母艦ですね。一応辞書の説明を見ます。
・Oxford English Dictionary: US informal An aircraft carrier.: The aircraft carrier Harry S Truman, the newest operational flattop in the U.S. fleet, sailed this morning from Norfolk, Virginia.

wheel

Robert B.Parkerの "High Profile" を読んでいます。

"I'm doing what I can, Governor," Jesse said. "And I'm pretty good at it. As soon as there's an arrest, I'll be in touch."
The governor reddened slightly and looked at Kennfield agin.
Then he said, "We'll hold you to that," and wheeled and walked out of the room. The staff hustled to pick up their notebooks and briefcases and followed him out.

"wheel" の意味を調べます。
・Oxford English Dictionary: Turn around quickly so as to face another way.: Robert wheeled around to see the face of Mr. Mafouz.

・Collins Dictionary: If you wheel around, you turn around suddenly where you are standing, often because you are surprised, shocked, or angry.: She wheeled sharply and headed for the check-out counter.

・Cambridge English Dictionary: to turn round quickly: Mike wheeled on Tom and started shouting.

GovernorはJesseのそっけない応答にむっとしている様子だったので、ここの "wheel" は単に向きを変えたのではなく憮然としていたのでしょうね。