Finding synonyms for the word "ligule" can be a challenge, as it is a somewhat obscure term in the English language. However, there are a few words that can be used in its place, including "tongue," "strap," and "flap." The word "ligule" specifically refers to a thin, strap-like structure that is typically found on the underside of plant leaves, and is used to help hold the leaf in place. It is often seen in grasses and other types of tall, slender plants. While it may not be a common term in everyday conversation, understanding the meaning of "ligule" can be useful for those interested in horticulture or botany.