noun
General term for tuna, especially in culinary contexts. Often used in sushi restaurants.
今日のシビはとても新鮮だ。
Today's tuna is very fresh.
noun
Specifically refers to the Pacific bluefin tuna (クロマグロ). More precise than the general sense.
See also: クロマグロ
シビはクロマグロの別名としても使われる。
Shibi is also used as another name for the Pacific bluefin tuna.
マグロ is the common word for tuna in general. シビ is a less common synonym, often used in specific contexts like sushi.
クロマグロ is the standard term for Pacific bluefin tuna. シビ can be used as a synonym, but is less common.
The origin is uncertain. It may be a dialectal or specialized term for tuna, possibly from the sushi industry.