What is the correct format for multiple words and single definition?

[twisp007]

What does this mean?

Word(s) \t Definition

Like this?

Word1 Word2 Word3 \t Definition

How about this?

Compound Word1 Compound Word2 Compound Word3 \t Definition

Will this work?

[apeyser]

The two halves get dumped to the opf --- so the left-hand side follows the opf standard for words to be defined. I expect that arbitrary compounds will work, but I don't know -- it's been many years since I played with this.

[clach04]

Take a look at https://github.com/olety/epwing2kindle/blob/master/tab2opf.py which claims to support multiple definitions