2 adjectives to describe pinpricks

As soon as the latter perceived that French genius and persistency were bearing fruit in a magnificent colonial empire, the innate jealousy and greed of the German nation led to a policy of colonial pinpricks on the part of the Kaiser's Government.

Nothing to compare!" She was beginning to shoot out little pinpricks, but even that did not help her now; neither of them feared her.

2 adjectives to describe  pinpricks