Definition of: royal

(roi′əl) adjective
1. Pertaining to a monarch; kingly.
2. Under the patronage or authority of a king, or connected with a monarchical form of government: the Royal Society; a royal governor.
3. Like a king; princely; regal.
4. Of superior quality or size: royal octavo.
5. Surpassingly pleasant or fine: We had a royal time. See synonyms under IMPERIAL, KINGLY.
—noun
1. A Size of paper, 19 × 24 for writing, 20 × 25 for printing.
2. Naut. A sail next above the topgallant, used in a light breeze. [<F <L regalis kingly <rex king. Doublet of REGAL]
—roy′al·ly adverb