The Collaborative International Dictionary of English v.0.48:
Lying \Ly"ing\, p. pr. & vb. n. of Lie, to be supported horizontally. [1913 Webster] Lying panel (Arch.), a panel in which the grain of the wood is horizontal. [R.] Lying to (Naut.), having the sails so disposed as to counteract each other. [1913 Webster]