Escalin is not a word so doesn't mean anything.
Escaline is a psychodelic drug.
Escalating means a situation in which something becomes greater or more serious
Escallion is a herb grown in the West Indies very similar to a scallion which is a spring onion grown across Europe.
good question. Maybe they're using made-up words to name operations these days. Maybe it's a crossword clue: "Operation inside me to find hallucinogenic (9)".