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to tear to pieces; to tear to shreds; to tear up
to pick (e.g. fruit); to pluck; to tear off
to do ... heavily; to do ... heartily; to do ... vigorously
レタスを手で千切ってサラダに入れた。
I tore lettuce by hand and put it in the salad.
子供が折り紙を細かく千切った。
The child tore the origami paper into small pieces.
風で古いポスターが千切れている。
The old poster is torn to shreds by the wind.