dirty weekend 
noun British informal
A weekend spent away, especially in secret, with a lover.It's only really been a couple of dirty weekends....
- A couple of thousand strategically placed dirty weekends would do more for world peace than anything dreamt up in the security council.
- Much will depend on his attitude to international affairs, traditionally a weak point in US presidents who think it means a dirty weekend in Acapulco.
- clapometer
- clap (or lay or set) eyes on
- clapped-out
- clapper
- clapperboard
- clapper bridge
- clapper rail
- clap skate
- clap someone in jail (or irons)
- clap something on
- clap stick
- Clapton, Eric
- claptrap
- claque
- claqueur
- clarabella
- Clare
- Clare, John
- Claremont
- clarence
- Clarenceux
- Clarendon, Earl of
- Clare of Assisi, St
- claret
- clarification