Customs

n. duties, taxes; official procedure of inspecting merchandise and interrogating people coming into a country; location or place where this is carried out

n. habit; tradition; convention

Customs is an authority or agency in a country responsible for collecting customs duties and for controlling the flow of animals and goods (including personal effects and hazardous items) in and out of a country. Depending on local legislation and regulations, the import  or export of some goods may be restricted or forbidden, and the customs agency enforces these rules. The customs agency may be different from the immigration authority, which monitors persons who leave or enter the country, checking for appropriate documentation, apprehending people wanted by international search warrants, and impeding the entry of others deemed dangerous to the country.
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Noun
1. money collected under a tariff
(synonym) customs duty, custom, impost
(hypernym) duty, tariff
(hyponym) ship money

Noun
1. accepted or habitual practice
(synonym) usage, usance
(hypernym) practice, pattern
(hyponym) Americanism
2. a specific practice of long standing
(synonym) tradition
(hypernym) practice
(hyponym) habit, wont
3. money collected under a tariff
(synonym) customs, customs duty, impost
(hypernym) duty, tariff
(hyponym) ship money
4. habitual patronage; "I have given this tailor my custom for many years"
(hypernym) trade, patronage
Adjective
1. made according to the specifications of an individual
(synonym) custom-made, customized, customised
(similar) bespoke, bespoken, made-to-order, tailored, tailor-made

Duties, tolls, or taxes imposed by a government on commodities imported into or exported from that country. (TNDOT1)

The official process of inspecting goods and questioning people coming into a country, or the place where this is done.