n.珠饰；小水珠
动词bead的现在分词形式.
It could be embroidery or it could be beading,etc. 可能是刺绣，也可能是珠饰或者其它。
Following is a very clear diagram for this butterfly beading. 下图很清楚的教你怎么制作这个串珠蝴蝶。
