A fluid which makes motion or action smooth or removes friction.
| 单词 | θ214496 |
| 释义 | society > occupation and work > equipment > machine > parts of machines > other parts > [noun] > lubricators > lubricant (4) lubricant1828 A fluid which makes motion or action smooth or removes friction. unguent1867 spec. (See quot. 1867.) Subcategories:— box for (2) |
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