gill

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gill

(gĭl)
n.
Zoology The respiratory organ of most aquatic animals that obtain oxygen from water, consisting of a filamentous structure of vascular membranes across which dissolved gases are exchanged.

gilled adj.

gill

  1. the respiratory organ of aquatic animals. External gills, as in tadpoles, are produced by the embryonic ECTODERM; internal gills, as in fish, are developed from the pharynx and are thus endodermal (see ENDODERM). Gills are usually well supplied with blood vessels, and interchange of oxygen and carbon dioxide takes place across the extensive surface area (see COUNTERCURRENT EXCHANGE). Gills also occur in many invertebrates, for example, in insects such as the caddis fly larva and molluscs such as oysters. Occasionally, unusual structures act as gills, for example, the walls of the rectum in certain dragonfly nymphs, water being pumped in and out via the anus.
  2. the spore-carrying lamellae in basidiomycete fungi, located underneath the cap or ‘pileus’.
References in periodicals archive ?
We're also looked after wonderfully by Ghyll's manager Andrew Macpherson and his wife Jane, who don't just make us feel welcome, but practically adopt us for the weekend.
It was a bold move by Holbeck Ghyll to allow the BBC to set a large chunk of one of the episodes in its splendidly English oak-panelled restaurant.
Built for the Earl of Lonsdale in the 19th century and later converted into a hotel, Holbeck Ghyll oozes old-fashioned style and quality.
He was just 5lb lower that day and given that Balding's yard is in excellent form at present, Holbeck Ghyll merits maximum respect.
The couple, who have Cote Ghyll Caravan Park next door, have now made sure the 14-bed facility will remain one of the few youth hostels on the North York Moors.
Take time to rest and enjoy the views before heading back along the same route to your start point at the Old Dungeon Ghyll.
"The real highlight of the week though for both Julie Phimister (parental engagement partner at Ashington High School) and I had to be seeing how the students helped each other during the day of ghyll scrambling.
They venture outside the hotel so can they act like proper couple for once, but they may have to go undercover again after Cameron's son rings up Tug Ghyll to speak to his dad, and gets Cain instead.
So when I got to the New Dungeon Ghyll hotel I was a little surprised to be entirely cut off from the outside world.
The walk starts and ends at The New Dungeon Ghyll Hotel, surely one of the best walking hotels in the Lake District .
However, Sarah wanders off when Victoria's back is turned but is found by Aaron, who takes the youngster to Tug Ghyll.
Holbeck Ghyll, also in Windermere, was built in the 19th Century and was a former hunting lodge for Lord Lonsdale.