apical

Short definition from Wiktionary

Adjective

1. 1
   Of or connected with the apex.
2. 2
   Situated at the growing tip of the plant or its roots, in comparison with intercalary growth situated between zones of permanent tissue.
3. 3
   Produced with the tip of the tongue.

Noun

1. 1
   A sound produced by obstructing the air passage with the tip of the tongue.