grice /ɡɹʌɪs/noun 2verb 1forms 4 noun2 •(Scotland) A pig, especially a young pig, or its meat; sometimes specifically, a breed of pig or boar native to north Britain, now extinct.A model of the grice - which was the size of a large dog and had tusks - has been created after work by researchers and a taxidermist. — 2006 •(no longer used) A step or stair.he stood under the grices — 1612 verb1 •(UK, slang) To act as a trainspotter; to partake in the activity or hobby of trainspotting; to trainspot.Many people joined the railways because the 'carrot' of a staff pass was a considerable attraction, whether for family travel or to grice at extremely low cost. — 1999 formsgriced · gricing · grices · gricen