A term for margarine often found in older cookbooks. A stick of oleo is a stick of margarine.

a spread made chiefly from vegetable oils and used as a substitute for butter

Another name for margarine, a vegetable oil based table spread often substituted for butter.

Hydraulic leg of an aircraft's undercarriage

A shock absorbing system used in an undercarriage.

"Oleo" is a Bebop composition by Sonny Rollins, written in 1954. It is one of the most popular pieces to feature rhythm changes. The performer is expected to improvise the B section, as only the A section is transcribed.