Definitions
1.NounOne who ties (knots, etc.).
2.NounSomething that ties.
3.NounA child's apron.
4.NounA row or range, especially one at a higher or lower level than another.
5.NounA rank or grade; a stratum."Stoke City were playing in the second tier of English football before being promoted to the Premier League."
6.NounA (typically forested) range of hills or mountains, especially in South Australia or Tasmania; a mountain. .mw-parser-output .defdate{font-size:smaller}
7.NounA horizontal row of panels within a comic strip.
8.VerbTo arrange in layers.
9.VerbTo cascade in an overlapping sequence.
10.VerbTo move (data) from one storage medium to another as an optimization, based on how frequently it is accessed.