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general::
noun ADJ. high, main | makeshift, portable | sacrificial VERB + ALTAR approach, go up to The bride approached the altar. ALTAR + NOUN boy | cloth, frontal | rail | table PREP. at an/the ~ Helen and Tony knelt at the altar. | before an/the ~ He lay prostrate before the high altar. | on an/the ~ He placed the candles on the altar.
Oxford Collocations Dictionary