A customs form is the declaration attached to a package going abroad. Fill in a customs form, a customs form for every parcel.
It states what is inside and what it is worth, and understating the value is an offence rather than a trick. A missing customs form is the commonest reason a parcel is returned.
1nouncustoms formThe declaration attached to a package going abroad.
“The parcel came back for want of a customs form.”
customs form is a form.
Practised in Bank & Post Office