ninepenny

from WordNet (r) 3.0 (2006)

ninepenny
    adj 1: used of nail size; 2 3/4 in or 7 cm long

from The Collaborative International Dictionary of English v.0.48

ninepenny \ninepenny\ adj.
   1. 2-3/4 in or 7 cm long; -- used of nail size; as, a
      ninepenny nail.
      [WordNet 1.5]

   2. costing 9 cents (US) or 5 pence (Britain).
      [WordNet 1.5]