1. (n.) A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis.
2. (n.) A vehement desire; esp. (Physiol.), the periodical sexual impulse of animals; heat; rut.
| Oestrus 1. (n.) A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis. 2. (n.) A vehement desire; esp. (Physiol.), the periodical sexual impulse of animals; heat; rut. | |