1) Animal order 2) Fleas 3) Order siphonaptera 
The fleas, an order of wingless insect ectoparasites highly adapted for survival in mammalian fur; they are flattened laterally, spined, and equipped with well-developed metathoracic legs for jumping. ... Origin: G. Siphon, tube, + G. A-priv. + pteron, wing ... (05 Mar 2000) ... 
Type: Term Pronunciation: sī′fō-nap′tĕ-ră Definitions: 1. The fleas, an order of wingless insect ectoparasites highly adapted for survival in mammalian fur; they are flattened laterally, spined, and equipped with well-developed metathoracic legs for jumping.
[n] - fleas
the Siphonaptera (or fleas) are an Order of insects. Fleas are well-known parasites on vertebrate animals including humans.
order Siphonaptera noun fleas