ymb

Part of speech: adverb, preposition
(Dat, Acc) 1. in a spatial sense: around, about; near; 2. 1) about, concerning, regarding; ymb þinne sið about your journey / arrival; 2) because of, on account of; 3. in a temporal sense: 1) at, about, during; ymb niht at night; ymbe underntíde at three o'clock; 2) after; ðæs ymb lítel soon after [cf also 3)]; ymbe twelf monð after twelve months; ymb féower wintra four years after; 3) before; ðæs ymb lítel or ðæs ymb litel fæc shortly before that; a short while ago [cf also 2)]; ðæs ymb án ȝéar a year earlier; a year ago (also ymbe, umbe, embe)
Etymology
[← Prot-Germ *umbi “around, about”; O Fris umbe; O Sax umbi; Dt om; OHG umbi (Mod G um); O Icel umb, um (Mod Icel um) ← Indo-Europ *ambh-; Sanskr abhí- “to; towards; against”; Anc Gr ἀμφι “by, near, with; around, about”; Lat amb-, ambi- pref “by, near; around, about”; O Ir imb “around, about”]