1670s, "lumpy piece of wood," possibly from Old North French choque "a block" (Old French çoche "log," 12c.; Modern French souche "stump, stock, block"), from Gaulish *tsukka "a tree trunk, stump."
chock (adv.)
"tightly, close up against," 1799, back formation from chock-full.
权威例句
1. The small roads are chock-a-block with traffic.
条条小路全挤满了车马行人。
2. The shelves were chock-a-block with ornaments.
架子上堆满了装饰品。
3. The 32-page catalog is chock-full of things that add fun to festive occasions.
32页的目录尽是些渲染节日喜庆的东西。
4. The train was chock - full of travellers.
火车上挤满了旅客.
5. The town centre was chock - a - block ( with traffic ).