The last word of the seven-character poem is wine.

Here are some seven-character poems, and the last word is wine:

Give it to teenagers for good wine-Tang Libai's "Into the wine, I don't see you"

Advise the monarch to drink more-Qu/Send Yuan 20 An Wei

Singing my songs and drinking my wine —— Tang Du Fu's The Yellow River was recaptured by the imperial army.

A glass of wine between peaches and plums —— Song and Huang Tingjian's "Send Yellow Several Times"

Want to buy osmanthus with wine and fruit

The above is just a brief list I have provided, and there may be many poems that match it.