Real Dictionary

bustle
verb: A place that is bustling with people or activity is full of people who are very busy or lively.
verb: If someone bustles somewhere, they move there in a hurried way, often because they are very busy.

bustle in American English 1
busy and noisy activity; commotion
to hurry busily or with much fuss and bother
intransitive verb: to move or act with a great show of energy
noun: thriving or energetic activity; stir; ferment
transitive verb: to cause to bustle; hustle

bustle in American English 2
a framework or padding formerly worn at the back by women to puff out the skirt
noun: fullness around or below the waist of a dress, as added by a peplum, bows, ruffles, etc

bustle in British English 1
noun: energetic and noisy activity
verb: to hurry or cause to hurry with a great show of energy or activity

bustle in British English 2
noun: a cushion or a metal or whalebone framework worn by women in the late 19th century at the back below the waist in order to expand the skirt