No. The verb you are speaking of is "entender". The third person singular form is "entiende", which is: He/ she/ or You (formal) understnds. To say "they understand", you need the third person plural, which is "entienden".
¿Le entiende / entienden / entiendes / entendéisal español?
Various things:Si (with an accent on the 'i') = 'yes'; without an accent, 'if'.entiende = 'he/she hears/understands' or 'you (formal, singular) understand'.
To understand is either "comprender" or "entender". The terms are interchangeable.
Mi familia no entiende
Comprende is the how you would say understand. Also entiende.
¿Entiende mi español? (Formal) ¿Entiendes mi español? (Informal)
Translation: You don't speak or understand Spanish.
"You understand"..... also often a question..... "You understand?"
"él no entiende" (he doesnt understand) or "él no puede entender" (he can not understand)
bebe, porfavor entiende, yo te amo
(tu) nunca sabes quien entiende el español (add 'tu' for emphasis/clarity)
que realmente entiende: [a person] that really understands