Meanings

thoracotomy

thoracotomy

(two-year) polytechnic college

polytechnic college (with two-year and four-year courses)

polytechnic college (with two-year and four-year courses)

opening (a letter)

to open

horizontal deployment (of techniques, etc.)

to open one's eyes slightly

lift bridge

(crime of) opening sealed correspondence

(crime of) opening sealed correspondence

dilatation stage (of labour)

closed port

opening (e.g. library, museum, etc)

opening up a kindergarten playground to young children and parents from the local area

self-disclosure

bringing luck and good fortune

open cover

craniotomy