drop in

US /drɑːp ɪn/
UK /drɑːp ɪn/
"drop in" picture
1.

aparecer, passar

to pay a casual visit to someone without making a prior arrangement

:
Feel free to drop in anytime you're in the neighborhood.
Sinta-se à vontade para aparecer a qualquer momento que estiver por perto.
I might drop in on my way home from work.
Eu posso passar no caminho de volta para casa do trabalho.
2.

cair, diminuir

to decrease or fall suddenly and significantly

:
The temperature is expected to drop in the evening.
A temperatura deve cair à noite.
Sales tend to drop in the off-season.
As vendas tendem a cair na baixa temporada.