be

Part of speech: adverb, preposition
(Dat, Instr) 1. by; near to; beside; at; on, upon; 2. around, round; about; 3. of, about; concerning, in reference to; 4. because of, for; by means of; according to, in conformity with (also bi, biȝ, )
Etymology
[Mod E BYProt-Germ *bi; Goth bi; O Fris be, bī; O Sax be, bī; OHG bi, bī; Mod G bei]