One Cup
A Drink, Full, A Lot
adverb, noun, な adjective, の adjective
One cup of liquid is equal to one cup (or one cup of liquid).
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. Just remember that 一 becomes いっ, and 杯 becomes ぱい.
「ちょっと一杯飲みに行かない？」「いいね。」
"Let’s go for a drink." "Sounds like a plan."
子供の時に「一杯のかけそば」という映画を一度だけ観たことがあります。
When I was a child, I watched a movie called "One Cup of Soba Noodles in Broth" just once.
次年度の予算のことで頭が一杯な状態だったので、その夜は一杯もお酒を飲む気にはなれなかった。
My mind was so full of the following year's budget that I didn't feel like having even one drink that night.