From WordNet (r) 3.0 (2006) [wn]:
reclining
n 1: the act of assuming or maintaining a reclining position
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Recline \Re*cline"\ (r[-e]*kl[imac]n"), v. t. [imp. & p. p.
Reclined (r[-e]*kl[imac]nd"); p. pr. & vb. n. Reclining.]
[L. reclinare; pref. re- re- + clinare to lean, incline. See
Incline, Lean to incline.]
To cause or permit to lean, incline, rest, etc.; to place in
a recumbent position; as, to recline the head on the hand.
[1913 Webster]
The mother
Reclined her dying head upon his breast. --Dryden.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Reclining \Re*clin"ing\, a. (Bot.)
(a) Bending or curving gradually back from the
perpendicular.
(b) Recumbent.
[1913 Webster]
Reclining dial, a dial whose plane is inclined to the
vertical line through its center. --Davies & Peck (Math.
Dict.).
[1913 Webster]