Oleo

noun

noun ·3 syllables ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A type of energy-absorbing landing gear strut in which sudden compression or extension of the strut causes a gas-filled chamber to push or pull a piston which forces oil through a small orifice, resulting in absorption of energy through viscous effects.

    "If the oil leaks out of the oleos, they won't be able to cushion the aircraft against a hard landing."

  2. 2
    The various fats and oils that go into the making of margarine. US, uncountable, usually
  3. 3
    Margarine. US, dated, uncountable, usually
  4. 4
    a spread made chiefly from vegetable oils and used as a substitute for butter wordnet

Example

More examples

"If the oil leaks out of the oleos, they won't be able to cushion the aircraft against a hard landing."

Etymology

Etymology 1

Ellipsis of oleo strut.

Etymology 2

From oleum (“olive oil”).

Etymology 3

Clipping of oleomargarine.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.