You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Dutch_language

Context:
A Frankish identity emerged and so did their Frankish or Franconian language. The language itself is poorly attested. A notable exception is the Bergakker inscription, found near the Dutch city of Tiel, which may represent a primary record of 5th-century Frankish. Although some placenames recorded in Roman texts could arguably be considered as the oldest "Dutch" single words, like vadam (modern Dutch: wad, English: "mudflat"), the Bergakker inscription yields the oldest evidence of Dutch morphology, but there is no consensus on the interpretation of the rest of the text.

Question:
What does the Dutch word "wad" mean in English?

mudflat