สอดไส้(sòt sâi)

[to] stuff/fill [food] with a filling

to put a filling inside food, such as buns, dumplings, pastries, or vegetables

stuffed; filled (of food)

describing food that has a filling inside

[to] insert [sth] (extra or hidden); slip/sneak [sth] in

to put something inside or among something else, often secretly or with a hidden aim, e.g., inserting an ad into an article, adding hidden terms to a contract