custom

(noun) accepted or habitual practice. Synonyms: usage, usance.

(noun) a specific practice of long standing. Synonyms: tradition.

(noun) money collected under a tariff. Synonyms: customs, customs duty, impost.

(noun) habitual patronage. Example: "I have given this tailor my custom for many years."

(adj) made according to the specifications of an individual. Synonyms: custom-made (vs. ready-made).