Meaning of “tight” - Learner’s Dictionary

tight

adjective uk us /taɪt/
FIRM

B2 firm and difficult to move:

Make sure the knot is tight.
CLOTHES

B1 fitting your body very closely:

a tight skirt
CONTROLLED

B2 controlled and obeying all rules completely:

tight security
They kept tight control of the school budget.
STRAIGHT

If cloth, wire, skin, etc is tight, it has been pulled so that it is straight or smooth.

NOT MUCH

If money, time, or space is tight, there is only just enough of it:

We should get six people into the car but it will be tight.
tightly adverb
tightness noun [ U ]

See also

(Definition of “tight adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)