noun
main attraction; highlight; big draw
Refers to the most appealing or attention-grabbing part of an event, lineup, or product range. Often used in promotional contexts.
今年の夏祭りの呼び物は花火大会です。
The main attraction of this year's summer festival is the fireworks display.
新メニューの呼び物は地元産の野菜を使ったサラダだ
The highlight of the new menu is a salad made with locally grown vegetables.
目玉 also means 'main attraction' but is more colloquial and often used in commercial contexts (e.g., 目玉商品). 呼び物 is slightly more formal and can be used for events, performances, or features.
Compound of 呼び (stem of 呼ぶ 'to call, invite') + 物 'thing'. Literally 'a thing that calls/invites people', i.e., something that draws a crowd.