The term "lambed" is often used to describe the birthing process of sheep, but there are a variety of synonyms that can be used in its place. Some common alternatives include "yeaned," "dropped," or "gave birth," all of which convey the same basic idea. Other possibilities might include "farrowed" or "whelped," although these terms are typically reserved for other types of animals. Ultimately, the best synonym to use will depend on the context of the sentence and the desired tone or emphasis. Regardless of the word chosen, however, the important thing is to accurately communicate the idea of the birth of a lamb or sheep.