acfuinn
Definitions (by source)
f., capacity, faculty, means, wealth, abundance, 612, 962, 2911, 4195, 7242, 8950, 9569; gen. –e, 9990; pl. 7906; dat. 6507. (The MSS. have acfuinn, acfuing, acbhuing, indiscriminately; the etymological spelling is acmhaing)
Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Editor: Osborn Bergin.