Wordnet 3.0
NOUN (1)
1.
winged seed of the ash tree;
The Collaborative International Dictionary of English v.0.48:
ash-key \ash-key\ n.
1. the winged seed of the ash tree.
[WordNet 1.5] Ashlar
WordNet (r) 3.0 (2006):
ash-key
n 1: winged seed of the ash tree