メモる

godan verb (-ru), transitive verb

jot down; take a note; make a memo

Casual, everyday verb for quickly writing something down so you don't forget. Common in spoken Japanese and informal writing.

• 電でん話わ番ばん号ごうをメモっておいて。

  Jot down the phone number.

• 会かい議ぎの内ない容ようをメモった。

  I took notes on the meeting.