What does the word "okta" refer to?
In meteorology, an okta is a unit of measurement used to describe the amount of cloud cover at any given location such as a weather station. Sky conditions are estimated in terms of how many eighths of the sky are covered in cloud, ranging from 0 oktas (completely clear sky) through to 8 oktas (completely overcast).
The three other suggested answers are associated with words that are very similar to "okta":
There is a city in Sakhalin, Russia with a similar sounding name: Okha
The WW2 Japanese suicide aircraft was known as the Ohka (Japanese for cherry blossom), also known as the Yokosuka MXY-7.
Gumbo or lady fingers is another name for Okra, a type of vegetable from the mallow family.