help which

which <thing>

Shows a list of objects matching 'thing' that you can pass to various commands.

Example:

>which weapon
1 - a long zanbatoh
2 - a truncheon (wielded)
3 - a stiletto (wielded by Chloë)

near.weapon - a long zanbatoh
my weapon - a truncheon (wielded)
that weapon - a long zanbatoh

This tells you that if you do something like examine weapon3, you will examine the weapon currently wielded by Chloë, but if you do examine my weapon you will examine the truncheon you are wielding.

See also:
info parser