Answer:
The word "swink" probably means that a lot of effort has been made.
Step-by-step explanation:
In the text shown above, we can see that the crocodiles worked hard to escape the fire, but all their efforts were in vain. The text presents contextual clues that this effort was violent and intensive even if it did not achieve results, that is, the crocodiles tried to get rid of the fire, but they did not succeed. This very significant effort is directly associated with the word "swink" presented in the text, which allows us to consider that this word means that something laborious and that requires great effort and concentration is being carried out.