(n) Columbus Day
(P)
(n) controller
(P)
(n) (comp) Control S
(n) (comp) Compact Pro
(n) Gothic rock
(n) gonadotropin (gonadotrophin)
(n) service load
(n) surf roller
(n) cycloserine
(n) cyclotron
(n) psychological
(n) psychologist
(n) (comp) subprogram
(n) surrogate pair (of characters)
(P)
(n) sarong apron
(n) Santa Claus
(P)
(ik) (n) xylophone
(n,vs) C-stroke (canoeing)
(n) coelostat
(n) ceilometer
(n) thixotropy
(n) cyclosporin
cyclosporine
(n) cyclopropane
(n) cyclohexane
(n) siderostat
(n) (uk) web-spinner (any insect of order Embioptera, esp. family Oligotomidae)
(n) synchrotron
(n,vs) synchronize
synchronise
(P)
(n) synchromism
(n) dystrophy
(P)