- Same as Aspen.
- A small, hooded, poisonous serpent of Egypt and adjacent
countries, whose bite is often fatal. It is the Naja haje. The name is
also applied to other poisonous serpents, esp. to Vipera aspis of
southern Europe. See Haje.
- One of several species of poplar bearing this name, especially
the Populus tremula, so called from the trembling of its leaves, which
move with the slightest impulse of the air.