The Portuguese word for sleep is
dormir

Portuguese Definition

dormir
1. v. to sleep; to be asleep (to rest in a state of reduced consciousness)
O gato está dormindo. - The cat is sleeping.
2. v. to fall asleep (to become asleep)
Demorou horas até que eu dormisse. - Hours passed before I fell asleep.
3. v. to have a given type of sleep
Dormir uma soneca. - To have a nap.
4. v. (figurative, intransitive) to sleep (to be temporarily inactive)
A célula dos terroristas está dormindo. - The terrorist cell is asleep.
5. v. (indtr, com, .euphemistic) to sleep with (to have sex with)
Peguei-a dormindo com um rapaz. - I caught her sleeping with a boy.
6. v. (indtr, com, .figurative) to be constantly with
A memória da guerra dorme com o veterano. - The memory of the war sleeps with the veteran.
7. v. (poetic, intransitive) to be dead
Todos meus heróis dormem. - All my heroes are dead.
8. v. (informal, of a limb, intransitive) to fall asleep (to temporarily lose blood circulation)
Acordei no meio da noite e meu braço tinha dormido. - I woke up in the middle of the night and my arm had fallen asleep.
9. v. (Brazil, slang) not to notice a problem
O controlador dormiu e os aviões bateram. - The controller didn’t pay attention and the aeroplanes collided.