the.com/grazer

means A person who snacks and nibbles continuously through the day rather than eating defined meals.

from Rooted in 'graze,' which goes back to Old English 'grasian' — literally to feed on grass, the way cattle do. By the 1800s 'graze' had stretched to mean humans nibbling bits of food here and there, and by the late 20th century 'grazer' settled into its modern sense: someone treating the whole day as one long open pasture.