cach·in·nate 
(kăkə-nāt′)
(kăkə-nāt′)intr.v. cach·in·nat·ed, cach·in·nat·ing, cach·in·nates
To laugh hard, loudly, or convulsively; guffaw.
[Latin cachinnāre, cachinnāt-, of imitative origin.]
cach′in·nation n.
cachin·na′tor n.
- trimorph
- trimorphic
- trimorphically
- trimorphism
- trimorphous
- Trimurti
- trinal
- trinary
- trine
- Trinidad
- Trinidad and Tobago
- Trinidadian
- Trinitarian
- Trinitarianism
- trinitite
- trinitrobenzene
- trinitroglycerin
- trinitrophenol
- trinitrotoluene
- trinitrotoluol
- trinity
- Trinity River
- Trinity Sunday
- trinket
- trinomial