To work steadily and persistently at a task.

लगातार कार्य करना

English Usage: She decided to peg away at her project until it was finished.

Hindi Usage: उसने तय किया कि वह अपने प्रोजेक्ट पर लगातार काम करती रहेगी जब तक कि वह खत्म न हो जाए।