トク, え.る, う.る, あつ, てろ
gain, get, find, earn, acquire, can, may, able to, profit, advantage, benefit
JLPT3 G4 S11 F175
The relevant seal inscription form of 㝵# combines a variant form of 戎 (seize) + 寸 hand/action indicator → take goods in hand; acquire. 得 adds 彳 movement/action indicator → take hold of goods → *acquire*; *gain* → *(take) advantage*; *be able to*; *hit the mark*; *work well*.
[Full Kanji Etymology List]