This is the 6914th most frequent Russian word.
алену
"Алену" does not have a direct meaning; it seems to be a form or variant of the name "Алена" (Alena), which is a feminine first name in Russian.
Here 'Алену' is the gender-specific form of the name 'Алена' in the accusative case, indicating the direct object of the action.
Я подарил цветы Алену.
I gave flowers to Alyona.
Here 'Алену' is the name in the accusative case, identifying the recipient of the action (called).
Маша позвонила Алену вчера вечером.
Masha called Alyona last night.
In this sentence, 'Алену' is also in the accusative case, as it refers to the person who was helped.