1. 
[syn: popcorn, Zea mays everta]
2.  small kernels of corn exploded by heat; 
The Collaborative International Dictionary of English v.0.48:
popcorn \pop"corn`\, pop corn \pop" corn`\, n.
   See pop corn under pop, n..
   [PJC]
WordNet (r) 3.0 (2006):
popcorn
    n 1: corn having small ears and kernels that burst when exposed
         to dry heat [syn: popcorn, Zea mays everta]
    2: small kernels of corn exploded by heat
The Free On-line Dictionary of Computing (30 December 2018):
POPCORN
   AI system built on POP-2.  "The POPCORN Reference Manual", S.
   Hardy, Essex U, Colchester, 1973.