tilde

noun
1
the mark ( ˜ ) placed over letters in some languages and some vowels in the International Phonetic Alphabet to show how they should be pronounced, as in España, São Paulo and /pɒ̃ʃɒ̃/ (penchant)
علامت موجی, تِلدا
2
the mark ( ˜ ), used in some dictionaries to represent the headword of an entry
علامت موجی, تِلدا, نشانه تِلدا