1. Pertaining to one of the small sacs (as in a compound gland)
   - acinar, acinous, acinose

See also: acinus

• know what's going on
• know what's what
• know-all
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• know-it-all
• Know-Nothing Party
• knowable
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• knowing
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• Knowlton's cactus
• known
• Knox
• Knoxville