Sentence:  <WSD>Tungid</WSD> fleas, one of which is commonly known as the sand flea, can cause such damage to a person. The <WSD>tungid</WSD> female embeds itself into the skin of the host until just the end of the abdomen is exposed. It swells to the size of a pea as its eggs develop. 
Meaning of the word marked with <WSD> tags:  Any flea of the family Tungidae.