Definition of "sinuate" [sin•u•ate]

• To bend or curve; wind in and out: a road that sinuates through the Alps. (verb-intransitive)
• Having a wavy indented margin, as a leaf. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The leaves, which are frequently damaged by insects, are alternate, elliptical, 6-20 cm long, 5-10 cm wide, entire, denticulate or sinuate."
• "Flexuous - ose: almost zig-zag, without acute angles but more acute at angles than undulating: differs from sinuate in being alternately bent and nearly straight."
• "Median lines: on the primaries of many moths: the first or t.a. crosses about one-third from base; the second or t.p. crosses beyond the outer third and is usually sinuate."