oil

Boyd’s Bible Dictionary:

(olive). Used for preparing food (Ex. 29:2); anointing (2 Sam. 14:2); illuminating (Matt. 25:1-13); in worship (Num. 18:12); in consecration (1 Sam. 10:1); in medicine (Mark 6:13); in burial (Matt. 26:12). Types gladness (Psa. 92:10).

Concise Bible Dictionary:

Olive Oil
In the description of the goodness of the land of promise one of the advantages mentioned is “a land of oil olive”; and among the blessings enumerated with which God would endow His obedient people is that their oil should be multiplied (Deut. 7:13; Deut. 8:8). It was an article of value, and the people had their olive yards as well as their vineyards. Oil was employed for various purposes. It was used as food (2 Chron. 2:10,15; 2 Chron. 11:11; Psa. 55:21); for anointing the kings (1 Sam. 10:1; 1 Sam. 16:1,13); in the sacrifices of the meat offering (Lev. 2:1-16); as an ingredient in the holy ointment (Ex. 30:24-25), see OINTMENT; as a cosmetic (Psa. 23:5; Psa. 92:10; Luke 7:46); to give light in the lamps (Ex. 35:8,14); as an emollient (Luke 10:34). Oil is a type of the Holy Spirit (Matt. 25:3-10; Heb. 1:9).
Olive Yard

Strong’s Dictionary of Greek Words:

Greek:
ἔλαιον
Transliteration:
elaion
Phonic:
el’-ah-yon
Meaning:
neuter of the same as 1636; olive oil
KJV Usage:
oil