English

tripcode

From trip + code - 'trip' is an abbreviation of '1人用（ひとりよう）キャップ' - hitori-you kyappu - which translates to 'cap for one'.

A compound of trip + code

Middle English trippen ‘to step lightly, skip’

English trip

Latin caudex ‘the stock or stem of a tree’

Latin cōdex ‘tree trunk’

Old French code ‘system of law’

Middle English code ‘system of law’

English code

Today it means

noun The hash code of a password, used for signing posts anonymously on imageboards.

Language periods are conventional ranges, not dates for this word.

Etymograph / tripcode