When speaking about tuples, I used to say and write "The number $a$ is the first component of the tuple $(a,b,c)$, and $c$ is its last component". This all went well until I had to speak about software components in the same text; the meaning of "component" got overloaded. (Luckily, I don't have connected components of graphs in the text, otherwise the situation could have been even trickier.) A change is need, so I'm thinking about saying "entry" for a part of a tuple. How do sentences such as "The number $a$ is the first entry of the tuple $(a,b,c)$, and $c$ is its last entry" sound? Any arguments for/against using "entry" to denote a part of a tuple?
Using "first element of a tuple" is not good in my case, as it would produce a clash when I'm speaking about different implementations of tuples in set theories.