"one who teases" (wool, flax, etc.), late 15c. (late 13c. as a surname), agent noun from tease (v.). From 1934 as "short sample, introductory advertisement."
例文
1. The problem looks simple enough,but when you come to try and solve it you 'll find it 's a real teaser .
この問題は簡単そうに見えますが、それを解くときは確かに難しい問題であることがわかります。
2.It doesn 't pay to invite a teaser like that.
そんな頭痛を招くようなことはありません.
3.Whether to accept the offer was a teaser .
その提案を受け入れるかどうかはまだ難しい問題だ。
4.This one 's a real teaser .
これは本当に難しい問題です。
5.This note is a preview(a teaser ,really)for that talk.