This is the 1459th most frequent Portuguese word.
alimentar
To feed or nourish.
The usage of 'alimentar' here refers to the act of providing food to living beings.
Eu preciso alimentar os pássaros todas as manhãs.
I need to feed the birds every morning.
'Alimentar' is used figuratively here to mean 'nourish' or 'stimulate' in relation to intellectual sustenance.
Aprender coisas novas diariamente ajuda a alimentar a mente.
Learning new things daily helps to nourish the mind.
In this context, 'alimentar' is used metaphorically to mean sustaining or encouraging positive feelings.