blow in

Short definition from Wiktionary

Verb

1. 1
   To unexpectedly and casually arrive.
2. 2
   To waste large amounts of something (typically money); to squander.
3. 3
   To activate a blast furnace by eliminating moisture and then igniting a large amount of fuel.

Noun

1. 1
   Someone who has only recently arrived in an area or community; a newcomer.