olemus
(1a) füüsiline tööriistade kast
https://duckduckgo.com/?q=toolbox&t=h_&iax=images&ia=images

https://en.wikipedia.org/wiki/Toolbox

(1b) metafoorina:
virtuaalne riistastik
Wiktionary:
2. (computing) a set of pre-existing routines for use in writing new programs

https://en.wikipedia.org/wiki/Macintosh_Toolbox