krill
UK[krɪl]US[krɪl]
n
small, shrimp-like crustaceans that are a major food source for many larger animals, especially whales.
Etymology
the word 'krill' entered english in the late 19th century from norwegian, where it originally referred to very small fish or fry. the norwegian term is thought to be related to the middle low german word 'krēl', meaning something small or stunted. this etymology reflects the creature's diminutive size. in english, its meaning narrowed specifically to denote the small, planktonic crustaceans that form vast swarms in the oceans, central to the marine food web.
Analysis
this is a simplex word. it is a direct borrowing from norwegian, where 'kril' means "small fry" or "tiny fish".
Examples
blue whales consume massive quantities of krill each day.
the antarctic krill population is sensitive to changes in sea ice.
scientists are studying krill as a potential source of omega-3 supplements.