Sentence:  <WSD>Hyenas</WSD> are scavengers, which means they eat food left behind by other animals and people. 
Meaning of the word marked with <WSD> tags:  Any of the medium-sized to large feliform carnivores of the subfamily Hyaeninae (genera "Hyaena" and "Crocuta"), native to Africa and Asia and noted for the sound similar to laughter which they can make if excited.