和英辞書

相合傘

noun

an umbrella or parasol shared by two people, which alludes to a romantic situation / (figuratively) an infatuation between two people / (slang, figuratively) a love affair, a romantic relationship

彼と初めて相合傘をした日が忘れられない。

I can't forget the day when I shared an umbrella with him for the first time.

意味（1）

an umbrella or parasol shared by two people, which alludes to a romantic situation

相(あい)合(あい)傘(がさ)で散(さん)歩(ぽ)している二(ふた)人(り)が向(むこ)うに見(み)えます。

Aiaigasa de sanpo shiteiru futari ga mukō ni miemasu.You can see a couple walking together under an umbrella over there.

意味（2）

(figuratively) an infatuation between two people

その二(ふた)人(り)はもう相(あい)合(あい)傘(がさ)だわ。

Sono futari wa mō aiaigasa da wa.Those two are already sharing an umbrella, don't you know.

意味（3）

(slang, figuratively) a love affair, a romantic relationship