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acer, acris -e, acrior -or -us, acerrimus -a -um sharp, bitter, pointed, piercing, shrill; sagacious, keen; severe, vigorous; acer, aceris maple tree; wood of the maple tree; maple; acus, acus needle, pin; hair-pin; pipefish, needlefish; detail; husks/chaff (pl.); acus, aceris husks of grain/beans, chaff;
aceris