Short for for Telesync. Truncated jargon used on file sharing networks to denote a film taped off a cinema screen; as opposed to something ripped off of a retail DVD (DVDrip/retail), or even a pre-release DVD screener (Screener). Format tends to be in SVCD, but can also be in any other format, divx/xvid etc.
It can also mean to Tiger Suit. Tiger Suiting is when you wear a huge gutted stuff animal, and run around doing wacky thangs. Sometimes when Tiger Suiting, you might ask married grocery store clerks out on dates, and/or scare young children.