Oestrus
Pronunciation : OEs"trus
Part of Speech : n.
Etymology : [L., a gadfly; also, frenzy, fr.Gr.
Definition : 1. (Zo?l.)
Defn: A genus of gadflies. The species which deposits its larv? in the nasal cavities of sheep is oestrus ovis.
2. A vehement desire; esp. (Physiol.), the periodical sexual impulse of animals; heat; rut.
Source : Webster's Unabridged Dictionary, 1913