sinuate

Short definition from Wiktionary

Verb

1. 1
   To advance in wavy or curvy manner, to bend, to curve, to wind in and out

Adjective

1. 1
   sinuous
2. 2
   Having wavy indentation on its border or edge.
3. 3
   Roughly the same height for most of its length, becoming much shallower and then curving back towards the stem before reaching the attachment point.