Dutch word taal comes from Proto-Indo-European *dul-, and later Proto-Germanic *talō (Calculation, number, reckoning.)

Detailed word origin of taal

Dictionary entry	Language	Definition
*dul-	Proto-Indo-European (ine-pro)	to shake, hesitate
*talō	Proto-Germanic (gem-pro)	Calculation, number, reckoning.
*tala	Old Dutch (odt)
tāle	Middle Dutch (dum)
taal	Dutch (nld)	Language.

Words with the same origin as taal