clapboard

(US) = weather-board (weather1).

clammy, clamor, clamorous, clamour (US clamor), clamp, clamp-down, clan, clandestine, clang, clanger, clangorous, clangour (US clangor), clank, clanking, clannish, clannishly, clannishness, clansman, clap, clap eyes on, clapper, clapper-board, claptrap, claret, clarification, clarify, clarinet, clarinettist (also clarinetist), clarion, clarity, clash, clasp, clasp-knife, class, class-conscious, class-consciousness, class-feeling, class-list, class-mate, class-room,