also: とこを
although (it is a certain time or condition); even though normally
Used to express that an action occurs despite an unfavorable or unexpected time or situation. Often follows a noun or clause describing the circumstance.
Thank you for coming all this way despite being so busy.
Thank you for taking the time despite how busy you are.
He went out even though it was raining.
I was saved just as I was about to drown.
Just when I'd finally managed to get the day off, a work call came in.
Derived from the noun ところ (place, time, situation) combined with the particle を, grammaticalized into a conjunction/particle meaning 'although at that time/situation'.