1 to see or know the meaning of (something): I can't understand his absence; Speak slowly to foreigners so that they'll understand you.
az: anlamaq, başa düşmək
ru: понимать
2 to know (eg a person) thoroughly: She understands children/dogs.
az: başa düşmək, dilini bilmək
ru: уметь обращаться
3 to learn or realize (something), eg from information received: At first I didn't understand how ill she was; I understood that you were planning to leave today.
az: anlamaq
ru: осознавать; понимать