The hash or number sign (#).

(US, slang) A cheap restaurant. / In the sport of rogaining, a central base camp providing hot meals and a place to sleep.

(idiomatic) To work through the details of something; especially to work through difficulties.

(computing) an algorithm that generates a numeric, or fixed-size character output from a variable-sized piece of text or other data; used in database table queries, cryptography and in error-checking

(programming) An associative array implemented as a vector, the indexes into which are the result of applying a hash function to the key.

plural of hash brown

plural of hash-brown

Alternative spelling of hash browns

(usually uncountable) Potatoes that have been finely chopped (i.e. hashed) and fried until browned.

plural of hash buster