From WordNet (r) 2.0 (August 2003) [wn]:
gravity
n 1: (physics) the force of attraction between all masses in the
universe; especially the attraction of the earth's mass
for bodies near its surface; "the more remote the body
the less the gravity"; "the gravitation between two
bodies is proportional to the product of their masses
and inversely proportional to the square of the distance
between them"; "gravitation cannot be held responsible
for people falling in love"--Albert Einstein [syn:
gravitation, gravitational attraction,
gravitational force]
2: a manner that is serious and solemn [syn: graveness,
sobriety, soberness, somberness]
3: a solemn and dignified feeling [syn: solemnity] [ant:
levity]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Gravity \Grav"i*ty\, n.; pl. Gravities. [L. gravitas, fr.
gravis heavy; cf. F. gravit['e]. See Grave, a., Grief.]
1. The state of having weight; beaviness; as, the gravity of
lead.
[1913 Webster]
2. Sobriety of character or demeanor. "Men of gravity and
learning." --Shak.
[1913 Webster]