Meaning

verb annoy continually or chronically

verb assail or attack on all sides:

verb decorate or cover lavishly (as with gems)

originFrom Middle English besetten, bisetten (“to besiege, blockade; to fill, occupy; to harass, beset; to allot, bestow; to arrange, manage; to place, set; to provide for; to treat in a certain way”), from Old English besettan, bisettan (“to surround, beset; to set near; etc.”), from Proto-West Germanic *bisattjan, from Proto-Germanic *bisatjaną (“to fill, occupy”), from *bi- (prefix meaning ‘at; by’)…

Etymology from Wiktionary, CC BY-SA 3.0