WordNet sense 1 (a written record of a commercial transaction):

accounting entry, ledger entry

WordNet sense 2 (something (manuscripts or architectural plans and models or estimates or works of art of all genres etc.) submitted for the judgment of others (as in a competition)):

submission

WordNet sense 3 (something that provides access (to get in or get out)):

entrance, entree, entryway, entranceway, entrance, entrée

WordNet sense 4 (the act of beginning something new):

debut, introduction, launching, unveiling, first appearance

WordNet sense 5 (the act of entering):

incoming, ingress, entering