lælaps

from The Century Dictionary.

• noun In zoology, a generic name used in various senses
• noun A species or an individual of the genus Lælaps .

from the GNU version of the Collaborative International Dictionary of English.

• noun (Paleon.) A genus of huge, carnivorous, dinosaurian reptiles from the Cretaceous formation of the United States. They had very large hind legs and tail, and are supposed to have been bipedal. Some of the species were about eighteen feet high.