<fish> cigarette butt 5 realizations
ACCEPTED Realization 1
type Polysemy
language English
lexeme roach
meaning 1 roach (Rutilus rutilus)
direction
meaning 2 the butt of a marijuana cigarette
reference Merriam-Webster
comment
ACCEPTED Realization 2
type Polysemy
language Modern Greek
lexeme γόπα
meaning 1 goby
direction
meaning 2 cigarette butt, stub of the cigarette
reference Xorikov, Malev 1993: 225
comment
ACCEPTED Realization 3
type Polysemy
language Russian
lexeme бычок (byčok)
meaning 1 goby
direction
meaning 2 cigarette butt, stub of the cigarette

Бычка! — подскочил один из братьев и, взяв окурок, роскошно и шумно вдувая воздух, наслаждаясь, затянулся. [Велимир Хлебников, Малиновая шашка (1921) ]

reference
comment The earliest mention in school folklore since 1912. Thus, the folk etymology from Belomorkanal (BK) mark of cigarettes is obviously false. 
ACCEPTED Realization 4
type Polysemy
language Turkish
lexeme izmarit
meaning 1 sea bream (Spicara smaris)
direction
meaning 2 cigarette butt, stub of the cigarette
reference Baskakov 1977: 489
comment
ACCEPTED Realization 5
type Polysemy
language Turkish
lexeme kefal
meaning 1 Mugil cephalus
direction
meaning 2 cigarette butt (argo)
reference Baskakov 1977: 529
comment