boucler

Etymology
14th century, from

Verb

 * 1)  to buckle (to fasten)
 * 2)  to curl make curly
 * 3)  to tie up close, finish (e.g. an affair or case)
 * 4)  to shut
 * 5)  to curl up become curly
 * 1)  to curl up become curly