01 n. Any protuberant part; a round, swelling part or body; a knoblike process; as, a boss of wood.
pl.
Bosses ((-ĕz))
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1.
Any protuberant part; a round, swelling part or body; a knoblike process; as, a boss of wood.
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2.
A protuberant ornament on any work, either of different material from that of the work or of the same, as upon a buckler or bridle; a stud; a knob; the central projection of a shield. See Umbilicus. See: Umbilicus
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3.
A projecting ornament placed at the intersection of the ribs of ceilings, whether vaulted or flat, and in other situations.(Arch.)
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4.
A wooden vessel for the mortar used in tiling or masonry, hung by a hook from the laths, or from the rounds of a ladder.
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5.
The enlarged part of a shaft, on which a wheel is keyed, or at the end, where it is coupled to another.(Mech.)
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6.
A head or reservoir of water.[Obs.]