mechanical pencil
US /məˌkæn.ɪ.kəl ˈpen.səl/
UK /məˌkæn.ɪ.kəl ˈpen.səl/

1.
lápis mecânico, lapiseira
a pencil in which the graphite lead is held in a retractable or replaceable mechanism rather than being sharpened
:
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I prefer using a mechanical pencil for drawing because of its consistent line thickness.
Prefiro usar um lápis mecânico para desenhar por causa da espessura consistente da linha.
•
He clicked the top of his mechanical pencil to extend the lead.
Ele clicou na parte superior de seu lápis mecânico para estender a mina.