滴 is built from the 氵 (water (left)) and 啇 (stem / root (in 適·敵)) components.
It belongs to a phonetic family with 摘, 適, and 敵 — they share the 啇 component and the reading テキ.
A common word using 滴 is ~滴 (~てき), meaning “drop”.
Don't confuse it with 摘, 適, 敵, and 嫡.