TANTALUS n. 2 definitions
A genus of wading birds comprising the wood ibises. Tantalus's cup (Physics), a philosophical toy, consisting of a cup, within which is the figure of a man, and within the figure a siphon, the longer arm of which passes down through the bottom of the cup, and allows the escape of any liquid that may be poured in, when…
TANTAMOUNT a. 2 definitions
Equivalent in value, signification, or effect. A usage nearly tantamount to constitutional right. Hallam. The certainty that delay, under these circumstances, was tantamount to ruin. De Quincey.