SUPPLEMENTAL; SUPPLEMENTARY a.
Added to supply what is wanted; additional; being, or serving as, a supplement; as, a supplemental law; a supplementary sheet or volume. Supplemental air (Physiol.), the air which in addition to the residual air remains in the lungs after ordinary expiration, but which, unlike the residual air, can be expelled; reserve…
CHAIN n.
hackle for uniting lengths of chain, or connecting a chain with an object. (b) (Railroad) Supplementary coupling together of cars with a chain. -- Chain gang, a gang of convicts chained together. -- Chain hook (Naut.), a hook, used for dragging cables about the deck. -- Chain mail, flexible, defensive armor of hamme…