‖ saccolabium|sækəʊˈleɪbɪəm| [mod.L., f.sacco- (assumed combining form of sacc-us sac2) + L. labium lip.] A genus of plants (N.O. Orchidaceæ); also a plant of this genus. 1850in Ogilvie.1882Garden 30 Dec. 584/1 The Saccolabiums are also there in great numbers.