1The paired respiratory organ of fishes and some amphibians, by which oxygen is extracted from water flowing over surfaces within or attached to the walls of the pharynx.
- Some others, like the Siamese fighting fish, are capable of breathing air in addition to extracting oxygen from the water with their gills.
- When you see an aquarium fish gulping water, or ‘making a gookie,’ you will also see the gill cover opening and the gills fluttering, as water is drawn over the gills and the fish breathes.
- To make matters worse, fish have large respiratory membranes, the gills, which expose a huge amount of surface area to the watery medium.
1.1An organ similar to a gill in an invertebrate animal.
- Notice the three large gills that the animal uses to ‘breathe’ in its underwater environment.
- In addition to two eyes and a mouth, this animal has markings suggesting gills.
- In some forms the gills were able to remain moist and so allow the animal to move about on land for short periods.
2The vertical plates arranged radially on the underside of mushrooms and many toadstools.
- An agaric, such as the common field mushroom, has gills in the form of fine, radiating ‘plates’.
- Agaricus indicates a mushroom with gills, and bisporus refers to this variety's self-sufficiently needing no second mushroom to make little mushrooms.
- Look for the white cap, stout white stem which detaches easily from the cap, and the pink gills, which turn brown as the mushroom matures.
green around (or at) the gills
- (Of a person) sickly-looking.Example sentences
- Wall Street is no place for the squeamish, but nowadays, even many long-term, die-hard blue chippers are looking green around the gills.
- The pies keep coming, and some of the contestants are starting to look a little green around the gills.
- ‘You're looking a little green around the gills!’
- [in combination]: a six-gilled shark
Middle English: from Old Norse.
A unit of liquid measure, equal to a quarter of a pint.
- The sets of weights were once the work tools of the county's pound police where they were used to measure the pounds, ounces, quarters and gills of an untold number of items.
- A tot is a sixth, a fifth, a quarter or a third of a gill of whisky.
- At school we had a free gill of milk each morning break as part of the government's plan to build a nation of healthy young things.
1A deep ravine, especially a wooded one.
- After sampling the cheese, walk to the neighbouring village of Hardraw, which is Old English for ‘shepherd's dwelling ’, and view Hardraw Force where Hearne Beck plunges nearly 100 ft into the deep ghyll below.
- A man who failed to return home from a walk in the Helvellyn area spent the night under a bush in a ghyll as 32 rescuers from three areas searched the entire range for him.
- From the early 10th cent. there was considerable Norse settlement, from Ireland and the Isle of Man, leaving evidence in words like fell, ghyll, tarn, and how.
1.1A narrow mountain stream.
- It's lovely, you sort of follow a gill that has alders like the River Cover, but almost different trees, small and gnarled and ancient looking.
Middle English: from Old Norse gil 'deep glen'.
Late Middle English: abbreviation of the given name Gillian.
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