BACK v.
cing, to bet against a particular horse or horses, that some one of all the other horses, collectively designated "the field", will win. -- To back the oars, to row backward with the oars. -- To back a rope, to put on a preventer. -- To back the sails, to arrange them so as to cause the ship to move astern. -- To b…
BASEMENT n.
d as a distinct substructure. ( See Base, n., 3 (a).) Hence: The rooms of a ground floor, collectively. Basement membrane (Anat.), a delicate membrane composed of a single layer of flat cells, forming the substratum upon which, in many organs, the epithelioid cells are disposed.