ils creusent

dig, excavate

→ creuser
creus dig; hollow out + ent 3rd-person plural present (indicative or subjunctive)
verb · 3rd-person plural, present tense Rare #48,891
dig, excavate With se creuser les méninges, it means “to rack one’s brains” or “to think hard.”
FR: Ils creusent un trou dans le jardin.
EN: They’re digging a hole in the garden.
Conjugation of creuser
Indicative present
SingularPlural
First creuse —
Second — creusez
Third creuse creusent
Subjunctive present
SingularPlural
First creuse —
Third creuse creusent

Ils se creusent toujours les méninges.

They're always racking their brains.

— Memories of Murder (2003)

Tu sais pourquoi ils creusent ?

Do you know why they're digging?

— Cemetery of Splendour (2015)

Qu'ils creusent si ça leur dit.

Let them dig if they feel like it.

— Le repentir (1987)

Tellement secret qu'ils creusent à la vue de tous.

So secret that they’re digging in plain sight.

— Cemetery of Splendour (2015)