Encara no tenim significats per a "assume a recumbent".
1I at once ousted them and lay down till the proper occupant appeared, looking evidently anxious to assume a recumbent position.
2No sooner had he assumed a recumbent position than a lusty and ceaseless singing began in his ears, which bewildered and half deafened him.
3Why, it means-itmeans-itmeans what it says; that he leaned ag'in' the tree, that is, that he assumed a recumbent posture ag'in' the tree!