any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills
"the shark is a large fish"
"in the living room there was a tank of colorful fish"
the flesh of fish used as food
"in Japan most fish is eaten raw"
"after the scare about foot-and-mouth disease a lot of people started eating fish instead of meat"
"they have a chef who specializes in fish"
the twelfth sign of the zodiac; the sun is in this sign from about February 19 to March 20
"As an Aquarius, I was born under the fish sign when my birthday falls between February 19 and March 20."
A cold-blooded vertebrate animal that lives in water, moving with the help of fins and breathing with gills.
"The lab results showed that our patient's tumor was fish positive for the HER2 gene, confirming we should proceed with the targeted therapy immediately."
A period of time spent fishing.
A counter, used in various games.
Acronym of fluorescent in situ hybridization: a molecular cytogenetic technique used to identify whether a DNA sample has a specific sequence.
In plain English: A fish is an animal that lives in water and breathes through gills instead of lungs.
"We caught a small fish while fishing in the lake yesterday."
Usage: Use fish to refer to aquatic animals with gills and fins, not the scientific acronym FISH. Reserve the technical term for laboratory contexts involving DNA analysis.
To hunt fish or other aquatic animals in a body of water.
"We spent the whole afternoon fishing by the lake to catch some bass for dinner."
In plain English: To fish means to try to catch fish using a line, net, or other tool.
"We spent the afternoon fishing for trout in the river."
Usage: Use "fish" as a verb to describe the act of hunting for fish or other aquatic animals in a body of water. You can conjugate it regularly, such as "I am fishing," "he fished," or "they will fish."
A surname.
"My neighbor, Mr. Fish, invited us all over for his barbecue on Sunday."
The word fish comes from the Old English fisċ and has retained its original meaning since ancient times. It traveled into modern English through Middle English without changing its definition.