2baaea63_sh_Phrasal_Verbs_with_Examples__Phrasal_Verb
[Meaning] To come without an appointment [Example Sentences] I thought I’d drop in and say hi. I was surprised when she dropped in unannounced at midnight. [Phrasal Verb] 
drop in/by/over
Phrasal Verbs:English Phrasal Verbs with Examples
Phrasal Verb