Definition of put one's finger in the dike in US English:

put one's finger in the dike

phrase

  • Attempt to stem the advance of something undesirable.

    • ‘Don't let people criticise you for this - after all, the hurricane was over and what the heck could you do, put your finger in the dike?’
    • ‘Sometimes it's hard to put your finger in the dyke when you are sitting in the stand, but we certainly did things that we didn't do in practice and we haven't done in the rest of the tournament.’