Bromide is interesting in that it has both scientific and non-scientific meanings, although the non-scientific are derived from the scientific.
Bromide.
An anion of the element bromine, element 35. Several metal bromides (most commonly potassium bromide) are used medicinally as sedatives.
A reproduction or proof on bromide paper; a bromide print, or the developer used to create such.
A commonplace saying, trite remark, conventionalism; a soothing statement which has little purpose except to make you feel better; eg. “take things a day at a time”, or “go with the flow”.
[The element bromine (shown above) is nasty stuff. It is just about liquid at room temperature and evaporates easily as a brown vapour. It smells like chlorine (think swimming pools and loo cleaner) only worse as like this you get it in a higher concentration. I had to work with it in my undergraduate research project. I assure you it is not nice; you always use a fume hood. Happy days.]
1. A show contained or carried about in a box; a peep-show.
2. A show or spectacle of any kind.
3. Spectacular display.
According to the OED the word dates from 1681 and “is formed in imitation of the foreign way of pronouncing rare show” (Johnson). It has also been suggested that raree may represent rarity but Johnson’s statement is probably the correct one given that the early exhibitors of peep-shows appear to have been usually Savoyards, from whom the form was no doubt adopted. Recall that the diarist Samuel Pepys observed a marionette show featuring an early version of Punch & Judy (not quite a peep show but not unlikely they derive from the same tradition?) in London’s Covent Garden in May 1662. This was performed by an Italian puppet showman, Pietro Gimonde (aka. Signor Bologna).
To remove the bark, rind, or husk from; to strip of its bark. Hence, to divest of what conceals, to expose.
To ‘flay’ or to peel.
Decorticate (adjective).
Destitute of a cortex or cortical layer (applied specifically to some lichens).
When I was a child I remember my mother always used to describe a peculiarly tasteless wine (usually her own home-made wine) as being “like decorticated cardboard”. Somehow one didn’t have to be told exactly what the word meant!
Bromide.
3. Spectacular display. 
Frippet. 
English possesses about 750,000 words of which some 100,000 are obsolete.