American Heritage® Dictionary of the English Language, Fourth Edition
- n. A block that encloses and supports a journal or shaft; a bearing.
GNU Webster's 1913
- n. (Mach.) a block, or standard, for supporting a journal, as of a shaft. It is usually bolted to the frame or foundation of a machine, and is often furnished with journal boxes, and a movable cover, or cap, for tightening the bearings by means of bolts; -- called also
pillar block, or plumber block.
- n. a cast-iron or steel block for supporting a journal or bearing
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