pignut

pig +‎ nut

• IPA^(key): /ˈpɪɡnʌt/

pignut (plural pignuts)

1. The edible tuber of Conopodium majus, native to western Europe.
   • 1610, The Tempest, by Shakespeare, act 2 scene 2

     I prithee, let me bring thee where crabs grow;

     And I with my long nails will dig thee pig-nuts;

   • 1888, Rudyard Kipling, ‘The Judgement of Dungara’, Black and White, Folio Society 2004, vol. 1, p. 382:

     Justus partially overcame their scruples against work, and taught them that the black earth was rich in other produce than pignuts only.

2. (US) Any of various types of hickory or their fruits; a hognut.
3. Simmondsia chinensis, jojoba.

• gun pit