Definitions

1. noun

any of various large, fusiform, oily fishes of the family Scombridae, typically having a metallic luster and a blue back and silver belly.

“We had tuna salad for lunch.”

2. verb

to become or be made dark or indistinct, as if obscured by a film of moisture.

“The photograph started to tuna, making it difficult to see the details.”

3. verb

to turn or become dark or indistinct.

“The fog tunas the landscape at dawn.”

4. verb

to twist or turn out of shape.

“The fabric tunas when exposed to water.”