Asuq refers to a small flask or vessel used for oil, appearing in 2 Kings in the account of the widow of the prophets who had only a small jar of oil remaining. The word is rare and denotes a particular type of container for anointing oil or household oil.
The flask of oil in 2 Kings 4 becomes the vessel of miraculous provision. From a single small container, Elisha's miracle filled jar after jar — a picture of divine abundance overflowing human limitation. Oil throughout Scripture represents the Holy Spirit's anointing, and the miracle foreshadows the inexhaustible fullness of the Spirit poured out on those who come to God in need.