[1] : The Collaborative International Dictionary of English v.0.48

damp \damp\ da^mp, n. akin to lg., d.,  dan. damp vapor,
   steam, fog, g. dampf, icel. dampi, sw. damb dust, and to mng.
   dimpfen to smoke, imp. dampf.
   1. moisture; humidity; fog; fogginess; vapor.
      1913 webster

            night . . . with black air
            accompanied, with damps and dreadful gloom.
                                                  --milton.
      1913 webster

   2. dejection; depression; cloud of the mind.
      1913 webster

            even now, while thus i stand blest in thy presence,
            a secret damp of grief comes o'er my soul.
                                                  --addison.
      1913 webster

            it must have thrown a damp over your autumn
            excursion.                            --j. d.
                                                  forbes.
      1913 webster

   3. mining a gaseous product, formed in coal mines, old
      wells, pints, etc.
      1913 webster

   choke damp, a damp consisting principally of carbonic acid
      gas; -- so called from its extinguishing flame and animal
      life. see carbonic acid, under carbonic.

   damp sheet, a curtain in a mine gallery to direct air
      currents and prevent accumulation of gas.

   fire damp, a damp consisting chiefly of light carbureted
      hydrogen; -- so called from its tendence to explode when
      mixed with atmospheric air and brought into contact with
      flame.
      1913 webster
see also:
choke damp carbonic acid carbonic damp sheet fire damp 

[2] : The Collaborative International Dictionary of English v.0.48

carbonic \carbon"ic\, a. cf. f. carbonique. see carbon.
   chem.
   of, pertaining to, or obtained from, carbon; as, carbonic
   oxide.
   1913 webster

   carbonic acid chem., an acid ho.co.oh, not existing
      separately, which, combined with positive or basic atoms
      or radicals, forms carbonates. in common language the term
      is very generally applied to a compound of carbon and
      oxygen, co2, more correctly called carbon dioxide. it
      is a colorless, heavy, irrespirable gas, extinguishing
      flame, and when breathed destroys life. it can be reduced
      to a liquid and solid form by intense pressure. it is
      produced in the fermentation of liquors, and by the
      combustion and decomposition of organic substances, or
      other substances containing carbon. it is formed in the
      explosion of fire damp in mines, and is hence called
      after damp; it is also know as choke damp, and
      mephitic air. water will absorb its own volume of it,
      and more than this under pressure, and in this state
      becomes the common soda water of the shops, and the
      carbonated water of natural springs. combined with lime it
      constitutes limestone, or common marble and chalk. plants
      imbibe it for their nutrition and growth, the carbon being
      retained and the oxygen given out.

   carbonic oxide chem., a colorless gas, co, of a light
      odor, called more correctly carbon monoxide. it is
      almost the only definitely known compound in which carbon
      seems to be divalent. it is a product of the incomplete
      combustion of carbon, and is an abundant constituent of
      water gas. it is fatal to animal life, extinguishes
      combustion, and burns with a pale blue flame, forming
      carbon dioxide.
      1913 webster
see also:
carbon carbonic acid ho.co.oh co2 carbon dioxide after damp 
choke damp mephitic air carbonic oxide co carbon monoxide 

[3] : The Collaborative International Dictionary of English v.0.48

choke damp \choke" damp`\
   see carbonic acid, under carbonic.
   1913 webster
see also:
carbonic acid carbonic 

Choke >> C Words
Choke, definition of term: Choke
choke_pag1.html

Damp >> D Words
Damp, definition of term: Damp
damp_pag1.html

Choke Down >> C Words
Choke Down, definition of term: Choke Down
choke+down_pag1.html

Death Damp >> D Words
Death Damp, definition of term: Death Damp
death+damp_pag1.html