English
embolster
From em- + bolster.
Proto-Indo-European *bʰel- ‘to swell, blow, inflate, burst’
…
Proto-Germanic *bulstraz ‘pillow, cushion’
Proto-West Germanic *bolstr ‘bolster, pillow, cushion’
Old English bolster ‘pillow’
Middle English bolster ‘a soft stuffed bag to lie or lean on’
English bolster
Today it means
verb To prop up or support, as with a bolster; shore up
Language periods are conventional ranges, not dates for this word.
Etymograph / embolster