noun

• A haemorrhage from the nose; usually, blood flow exiting the nostrils that originates from the nasal cavity.
• (US obsolete slang) A nerd or geek; a dork.
• (Philippines, figurative, slang) mental overload (usually attained as a result of having to comprehend new and/or complex concepts or languages that one is not particularly skilled with).
• Short for nosebleed seat. [(Canada, US) A seat in the nosebleed section, usually cheaper and with a poorer view than other seats.]