wobble

Short definition from Wiktionary

Noun

1. 1
   An unsteady motion.
2. 2
   A tremulous sound.
3. 3
   A low-frequency oscillation sometimes used in dubstep.
4. 4
   A variation in the third nucleotide of a codon that codes for a specific aminoacid.

Verb

1. 1
   To move with an uneven or rocking motion, or unsteadily to and fro.
2. 2
   To tremble or quaver.
3. 3
   To vacillate in one's opinions.
4. 4
   To cause to wobble.