bus·tle 1 
(bŭsəl)
(bŭsəl)intr. & tr.v. bus·tled, bus·tling, bus·tles
To move or cause to move energetically and busily.
n.
Excited and often noisy activity; a stir.
[Possibly variant of obsolete buskle, frequentative of busk, to prepare oneself, from Old Norse būask, reflexive of būa, to prepare; see bheuə- in the Appendix of Indo-European roots.]