This is the 580th most frequent Dutch word.
sprak
"Sprak" is the past tense of "spreken," meaning "spoke" in English.
Here, 'sprak' is the past tense of 'spreken', meaning 'to speak' in Dutch, and it's used to depict an action of speaking that happened in the past.
Hij sprak duidelijk en langzaam tijdens de presentatie.
He spoke clearly and slowly during the presentation.
In this case, 'sprak' is used in a figurative sense to denote that someone's facial expression communicated a lot without words.
Toen hij binnenkwam, sprak zijn gezicht boekdelen.
When he entered, his face spoke volumes.
'Sprak' here acts as a part of the phrasal verb 'sprak uit', where 'uit' modifies the verb 'sprak', together forming 'to express' in the past.