It means 'I miss you lots' :)
I miss you loads in Welsh is "Rwy'n dy golli di llawer!"
Goodbye! I will miss you!" in Welsh is "Hwyl fawr! Byddaf yn dy golli di!"
It means: Good bye*, Willie (Will). I will miss you. *The "Good bye" is used with someone familiar or close, rather than formally. Hope this helps!
If you mean 6 dots and 1 dash or di-di-di-di-di-di-dah, it is not a valid Morse code character. If there are character spaces that you did not mention in there, there are several possibilities that it could mean.
di amore
In italian, generally, di means of.
"Di" means two.
Mwen di ou awa,mwen di ou awa,
two
Gua ai di means "i love you" in mandarin
"Di lang ikaw" is a Filipino phrase that translates to "Not only you" in English. It is often used to express that there are others aside from the person being referred to.
The expression is "Dinky Di" and it means honest, straight, No kidding.