ambergris

n [U] wax-like substance present in the intestines of sperm-whales and found floating in tropical seas, used as a fixative in perfumes 龙涎香（抹香鲸肠道内的蜡状物质, 见於热带海洋中漂浮, 可用作香精的定香剂）.

amanuensis, amass, amateur, amateurish, amateurishly, amateurism, amatory, amaze, amazement, amazing, amazingly, amazon, Amazonia, amazonian, ambassador, ambassador-at-large, ambassadorial, ambassadress, amber, amber-like, ambi-, ambidextrous, ambience (also ambiance), ambient, ambiguity, ambiguous, ambiguously, ambiguousness, ambit, ambition, ambitious, ambitiously, ambivalence, ambivalent, ambivalently, amble, ambrosia, ambrosial, ambulance, ambush,