F / formācĕus
adjective hapax

formācĕus

fem. formācea · neut. formāceum
made in a form; mould
made in a form or mould: parietes, quos appellant formaceos, quoniam in forma circumdatis duabus utrimque tabulis inferciuntur verius quam instruuntur, Plin. 35, 14, 48, § 169.