grig /ɡɹɪɡ/noun 5verb 1forms 3 noun5 •A cricket or grasshopper.The black rooks will fly away, my son, and you'll come back as brown as a berry, and as merry as a grig. — 1926 •A small or young eel. •Specifically, the broad-nosed eel. See glut. •(dialect, UK) Heath or heather.The further method of tillage pursued, was to make fallows; and if the season permitted, so that the ground could be cleared and burnt off, to destroy the grig or heath, […] — 1791 •(no longer used) A dwarf. verb1 •(US, Ireland) To irritate or annoy.Smell of grilled beefsteaks to the starving gnawing their vitals. Desire to grig people. — 1922 formsgrigged · grigging · grigs