| 英文.... | Central wedge-shaped voussoirs in arches or vaults; also, similar elements used as ornaments on the heads of doors or windows. |
| 荷蘭語.... | De centrale wigvormige boogstenen in bogen of gewelven. Ook voor vergelijkbare elementen die worden gebruikt als ornamenten op de bovendorpels van deuren of ramen. |
| 拱心石............ | [AS-Academia Sinica] |
| ................. | 朗文當代大辭典 953 |
| ................. | 國家教育研究院-雙語詞彙、學術名詞暨辭書資訊網 October 27, 2010 |
| ................. | 台灣古建築圖解事典 189 |
| ................. | 世界建築經典圖鑑 336 |
| ................. | 世界藝術史 894 |
| ................. | 大英視覺藝術百科全書 Vol. 9,pp. 182 |
| 拱頂石............ | [AS-Academia Sinica] |
| ................. | 建築學英漢辭典 234 |
| ................. | 劍橋藝術史-中世紀 127 |
| keystones............ | [VP] |
| ................. | Pierce, From Abacus to Zeus (1987) illustration, 5 |
| ................. | Dictionary of Architecture and Construction (1975) illustration |
| ................. | Lever and Harris, Illustrated Glossary of Architecture (1966) illustration |
| ................. | RIBA, Architectural Keywords (1982) |
| ................. | RILA, Subject Headings (1975-1990) |
| ................. | Avery Index (1963-) (source AAT) |
| keystone............ | [VP] |
| ................. | Getty Vocabulary Program rules |
| key blocks(keystones)............ | [VP] |
| ................. | Dictionary of Architecture and Construction (1975) key blocks |
| ................. | RILA, Subject Headings (1975-1990) key blocks |
| ................. | Getty Vocabulary Program rules |
| sluitstenen............ | [Bureau AAT] |
| ................. | AAT-Ned (1994-) |
| sluitsteen............ | [Bureau AAT] |
| ................. | AAT-Ned (1994-) |
| rozen(gewelfstenen)............ | [Bureau AAT] |
| ................. | AAT-Ned (1994-) |
| slotstukken............ | [Bureau AAT] |
| ................. | AAT-Ned (1994-) |
| clefs de voûte............ | [CHIN] |
| ................. | CHIN database |
| clef de voûte............ | [VP] |
| ................. | CHIN database |
| claves(arco)............ | [CDBP-DIBAM] |
| ................. | Comité, Plural del término en singular |
| clave(arco)............ | [CDBP-DIBAM] |
| ................. | Alvarez et al., Diccionario de la decoración (1968) 162 |
| Subject:............ | [Bureau AAT] |
| ................. | RIBA, Architectural Keywords (1982) Arches: keystones |
| ................. | CHIN database |
| ................. | Wolters beeldwoordenboek (1986) |