A flipper (used in Scuba diving, for example) is "una aleta"-- this word has been changed to a verb "aletear" which would mean literally "to flipper."
There is a learning-aid called 'The Flippers' (registered trade mark) published by Christopher Lee Publications, by which file-like pages of information can be 'flipped' to find the information sought quickly. One of them is for Spanish Grammar, including Verbs. Is this what the question relates to?
I sleep on my back in Spanish is: Yo duermo de espaldas.
"Vuelvo" in Spanish means "I return" or "I come back", depending on the context.
No ,they did not know of spanish back then.
If you mean your back as in the part of your anatomy, the spanish word is "espalda" (S-paul-dah)
"Welcome back" in Spanish is "Bienvenido de nuevo".
Regresa
Vuelvas means Come back or Return in Spanish.
To translate "How is the weather back there" from English to Spanish, you would say, "Como es el clima alli."
He doesn't write back (English) El no escribe de nuevo (Spanish)
"Volver" in Spanish means "to return" or "to come back."
change skype from spanish to back to english
Devuelvaselo