The Collaborative International Dictionary of English v.0.48:
Teacupful \Tea"cup`ful\, n.; pl. Teacupfuls. As much as a teacup can hold; enough to fill a teacup. [1913 Webster] TeadWordNet (r) 3.0 (2006):
teacupful n 1: as much as a teacup will hold [syn: teacup, teacupful]