the.com/boil

the moment water stops being shy and starts throwing a full-blown tantrum

means To heat a liquid until it bubbles and turns to vapor, or to cook something by submerging it in such roiling water; also, an angry red pus-filled swelling on the skin.

from From Old French 'boillir,' itself from Latin 'bullire' — to bubble, seethe, well up — built on 'bulla,' a bubble (the same root that gives us 'bull' as in papal seals and 'bullet' as in little round things). The skin-swelling 'boil' is a separate word entirely, from Old English 'byl' or 'byle,' a sore or blister, related to German 'Beule'; the two just happened to collide into the same spelling, like strangers with matching coats.

sea level only
On Everest, water boils at just 71°C
slow killer
Boiling kills most germs but not all toxins
leidenfrost trick
Droplets float on pans hotter than boiling
medical sense
A boil is an infected, pus-filled skin lump
for instance

bath boil outbreak 1665 — outbreak of boils and carbuncles that afflicted residents of bath, england during the great plague year

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