supplement
n.
late 14c., from Latin supplementum "that which fills up, that with which anything is made full or whole, something added to supply a deficiency," from supplere "to fill up" (see supply, v.).
v.
1829, from supplement, n.. Compare Spanish suplementar. Related: Supplemented; supplementing.
〔李〕[sup-(sub-）=from under自下；ple=to fill装满；-ment n.=the act or result表行为或结果→“the act or result of filling from under自下而上装满的行为或结果”→]Ⅰn. something added to complete or reinforce填补物，增补物