Questions & Answers about Die speld steek haar hand.
Yes. Die here is the definite article, meaning the.
A useful point for English speakers: Afrikaans does not have grammatical gender for nouns, so you do not need different words for the depending on whether a noun is masculine, feminine, or neuter. Die works very broadly.
It is capitalized here only because it is the first word of the sentence.
Here, steek means something like prick, pierce, or stick into.
This is a very common Afrikaans verb with a fairly wide range of meanings depending on context. In different sentences, steek can also mean things like stick, poke, stab, or insert.
So the exact English translation depends on what is doing the action and what is being affected.