capstone

Pronunciation:  US [-stoʊn] UK ['kæpstəʊn]
  • n.Keystone; stone, (reaching a successful conclusion of the cause) vertex
  • WebKaipusitong; stone capstone course
bottom nadir rock bottom
acme apex apogee height climax crescendo crest crown culmination head high noon high tide high-water mark meridian ne plus ultra noon noontime peak pinnacle sum summit tip-top top zenith