English
floatstick
From float + stick.
Proto-Indo-European *plewd- ‘to float, swim, fly’
Proto-Germanic *flutōną ‘to float’
Proto-West Germanic *flotōn ‘to float’
Old English flotian ‘to float’
Middle English floten ‘to float’
English float
Proto-Indo-European *(s)teyg- ‘to be sharp’
…
Proto-Germanic *stikkô ‘pole’
Proto-West Germanic *stikkō ‘stick’
Old English sticca ‘stick’
Middle English sticke ‘branch’
English stick
Today it means
noun A device used to measure the fuel level on modern aircraft.
Language periods are conventional ranges, not dates for this word.
Etymograph / floatstick