1. Winding like a screw; pointed like a spire.

2. A curve which continually recedes from a centre, round which it revolves.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• sparkal,
• spirall,
• spesal,
• sieral,
• spiecal,
• speical,
• squral,
• mpral,
• sprall,
• spicial,
• spirials,
• sprial,
• squiral,
• specal,
• spril,
• sevral,
• seiral,
• spira,
• swireal,
• spirutal

• sporulate,
• sproule,
• Spurling,
• spiraling,
• Spurlock,
• sprawling,
• sprowl,
• spirilla,
• sproles,
• sprawled,
• spurlin,
• Spruell,
• spirally,
• spirula,
• Spruill,
• sparely,
• sproull,
• sprawler,
• sparling,
• sproul,
• sprawly,
• spirillum,
• sprawl,
• Sperling.

The adverb form of the word "spiral" is "spirally".

The adjective form of the word "spiral" is "spiral". Example: "The spiral staircase wound up to the top of the tower".

The plural of the "spiral" can be the "spirals".

The singular of the "spiral" can be the "spiral".