Noun
(uncountable) Initialism of fermentation biotechnology.
(countable, property law, England & Wales) Initialism of farm business tenancy.
Source: en.wiktionary.orgFBT Sawmill is having an open house to display dozens of their handcrafted pieces on June 16. It starts at 8 a.m. and goes until about 4 p.m., but they will keep the showroom open as long as people are there. Source: Internet