chap lau chu [t͡säp̚˩ lɑʊ˩ t͡sʰuˑ˩] noun1 •(Singapore, informal) A ten-storey housing flat built by the Singapore Housing and Development Board (HDB) in the 1960s (now mostly vacated).Even as the years go by, chap lau chu still binds me to my childhood friends, many of whom have moved away to start their own families. — 2015 formschap lau chus