"take a nibble" is correct and can be used in written English.
You can use it to refer to taking a small amount of food or drink. For example, "We pulled out a plate of cheese and crackers and each took a nibble."
Cohen took a nibble and collapsed forward, her head on her forearms.
He moved his plate over and we each took a nibble.
The moment he is awake, he gets on the phone and proceeds to make something — anything — happen, mostly by trolling a series of celebrity names until whatever editor he is speaking to takes a nibble at the bait.
In shallow water off a beach in the Bahamas in April 2002, Dr. Erich Ritter was studying the behavior of bull sharks when a large female came up from behind and took a nibble.
The moment he is awake, he gets on the phone and proceeds to make something anything happen, mostly by trolling a series of celebrity names until whatever editor he is speaking to takes a nibble at the bait.
Last week, tens of thousands of poor Mexican farmers marched down Mexico City's fancy Paseo de la Reforma demanding that Nafta be reversed, their cows and donkeys occasionally taking a nibble from the grass along the median strip.
Thought to be a defense mechanism that discourages fish and other animals from taking a nibble, the tube-shaped organism, also known as an ascidian (Polycarpa mytiligera), then grows its missing digestive track back within 12 days, scientists say in Scientific Reports.
