Englishfor English speakers
airmail
Noun
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Airmail is the system of sending letters, parcels, and goods by air.
Goods are generally shipped by airmail.
packet
Noun
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A packet is a small container that goods are sold in.
Many seed companies sell mixed packets for summer and winter gardening.
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A packet is a small container sent in the mail.
Participants were mailed a packet containing the survey and a cover letter.
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A packet is a unit of information sent between two computers.