From Wiktionary, the free dictionary
strìngere la gola (first-person singular present strìngo la gola, first-person singular past historic strìnsi la gola, past participle strétto la gola, auxiliary avére)
- (idiomatic) to choke up (lose power of speaking)
la paura di parlarle mi ha stretto la gola- the fear of speaking to her made me choke up
