first thing

Adverb

not-comparable

Early in the morning. / Straight away, very soon.

Japanese Meaning

朝一番に / すぐに / 直ちに

I check my emails first thing.

私は朝一番にメールを確認します。

Sense（1）

Early in the morning.

I'll meet you first thing at the station.

Sense（2）

Straight away, very soon.

Some of 'em said that when a boy had been away from home a couple of years he ought to want to see his folks the first thing.