1) A long seat without a back, a bench (OED).
The OED notes that in this sense the word formerly had a distinctive pronunciation and that may be implicit in the early spellings: 1490 quarells now late wer had … in especiall for knealynge of thare wyffes … at a fourem in the said Kirke, Kirkburton
1507 on cobbord wyth a boffit stoyll and a forom, York
1567 two buffett fowremes and fowre buffett stooles, Fixby
1612 Item one long table and one long furram, Eccleshill
1642 to have eyther a broad fourme whearon to sitte themselfes, Elmswell.