Meaning of CHUG in English

CHUG

chug /tʃʌɡ/ BrE AmE verb ( past tense and past participle chugged , present participle chugging )

[ Date: 1800-1900 ; Origin: From the sound ]

1 . [intransitive always + adverb/preposition] if a car, train etc chugs somewhere, it moves there slowly, with the engine making a repeated low sound

chug along/up/around etc

The boat chugged out of the harbour.

2 . [transitive] ( also chug-a-lug ) American English informal to drink all of something in a glass or bottle without stopping

3 . [intransitive always + adverb/preposition] to make slow but steady progress:

The economy just keeps chugging along.

—chug noun [countable usually singular]

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.