The term "laiches" may not be a commonly used word, but there are several synonyms for it. The word "spawn" is often used in place of laiches, especially when referring to fish reproduction. Other synonyms include "eggs," "roe," or "caviar," depending on the specific type of animal that is producing the eggs. "Ova," "gravid," and "embryonic" are also possible synonyms for laiches, depending on the context in which the word is being used. Although these words may not be interchangeable in every situation, they offer a variety of options for expressing similar ideas.