From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( superl.) Not plentiful or abundant; in small quantity in proportion to the demand; not easily to be procured; rare; uncommon.

(2): ( adv.) Alt. of Scarcely

(3): ( superl.) Sparing; frugal; parsimonious; stingy.

(4): ( superl.) Scantily supplied (with); deficient (in); - with of.

King James Dictionary [2]

Scarce, a.

1. Not plentiful or abundant being in small quantity in proportion to the demand. We say, water is scarce, wheat, rye, barley is scarce, money is scarce, when the quantity is not fully adequate to the demand. 2. Being few in number and scattered rare uncommon. Good horses are scarce.

The scarcest of all is a Pescennius Niger on a medallion well preserved.