To look quickly and furtively, especially through a small opening.

झाँकना

English Usage: The children were peeping through the keyhole to see what was happening inside.

Hindi Usage: बच्चे दरवाजे की कुंजीhole से यह देखने के लिए झाँक रहे थे कि अंदर क्या हो रहा है।

A quick or furtive look.

झलक

English Usage: She took a peeping glance at her neighbor's garden.

Hindi Usage: उसने अपने पड़ोसी के बगीचे में झलक देखने की कोशिश की।