Sphinx ligustri, a moth found in most of the Palearctic ecozone.

Third-person singular simple present indicative form of watch like a hawk

(entomology) A species of libellulid dragonfly, Orthetrum glaucum, of tropical and subtropical Asia, having a blue abdomen and thorax.

plural of blue marsh hawk

(entomology) A species of libellulid dragonfly, Orthetrum sabina, of Eurasia, Australia, and Micronesia.

plural of green marsh hawk

plural of Hartle-Hawking state

(physics) In general relativity, a term that needs to be added to the Einstein-Hilbert action when the underlying spacetime manifold has a boundary.